Impact Of Cars Research Articles

The electric cars era transforming the car repairs and services landscape

The rise of electric vehicles (EVs) is undoubtedly revolutionizing the automotive industry, and its impact on the car repair and service business is profound. While exciting opportunities emerge, the shift also presents significant challenges, potentially leading to the disappearance of certain jobs and parts. In this research, we explore the impact of electric cars on the future car repair and service landscape. By 2030, EVs will constitute 60% of global car sales, underscoring the significant shift towards electric mobility. This transition is expected to reduce maintenance costs by up to 40% compared to conventional vehicles due to the simpler design and fewer moving parts in EVs. Certain body parts, including radiators and exhaust systems specific to gasoline cars, will also become redundant as EVs become more prevalent in the market. However, amidst these disappearing parts, there are emerging opportunities in the automotive industry. The rise of EVs will necessitate new areas of expertise, such as battery diagnostics, charging infrastructure installation, and software updates, creating new job opportunities for trained technicians. Furthermore, there will be a growing focus on software and electronics as they play a bigger role in car functionality. This shift emphasizes the importance of upskilling existing technicians in these areas to capitalize on new avenues within the automotive sector, aligning with the evolving landscape of electric mobility.

Modeling of material and energy inputs in the life cycle of a vehicle

The paper focuses on the analysis of the environmental impacts related to the production, operation, decommissioning of vehicles as well as servicing and repairs of cars in real conditions of their use. The authors’ presented mathematical model that was implemented in original numerical program EN-VEHICLE that enables the analysis of energy consumption and emission loads related to material inputs in the entire life cycle of a passenger car. It is a tool from the Life Cycle Assessment category that aims at the effective inclusion of environmental impacts in the decision-making process. The developed program allows for a quantitative interpretation of the calculation results in terms of the environmental safety in each of the phases and throughout the life cycle of the vehicle, taking into account the possibility of supplying the vehicle system with additional material streams derived from recycling and recovery, and introduced both during the construction phase and during the car operation phase. In the presented tool, linear algebra and matrix analysis were used in modeling the vehicle life cycle system. The results of the implementation of the mathematical model were presented in the form of a regression function that allows for approximation of selected empirical data. The regression analysis was used to verify the material characteristics. The tool can be used for a comprehensive comparative assessment of the environmental impact of a passenger car from different production periods. In addition, it can be used to forecast the environmental effects of changes in the material structure determining the production technology and, consequently, having a significant impact on the entire life cycle of the vehicle as well as energy and ecological parameters.

The Impact Of Credit Risk On The Financial Performance Of Banks In Indonesia Listed On The Indonesian Stock Exchange For The Period 2018 - 2022

Banking activities collect funds from customers and distribute credit to customers in the form of loans that are added with interest for the bank's opinion. Lending activities provided by banks have risks that must be mitigated to avoid large losses and adversely affect the bank's financial performance. This study used panel data regression method with sample of 35 Indonesian Banks listed on the Indonesia Stock Exchange with the period 2018 - 2022. Referring to the main research, bank financial performance is measured by return on assets and net interest margin, while bank risk is measured by the variables non-performing loans, capital adequacy ratio, loan loss provision ratio, and cost per loan ratio, this study also added new control variables, such as bank size and leverage. The results of this study found that there is an impact between NPL with ROA, LLPR with ROA, CAR with NIM, and CPLR with NIM. While there is no impact of CAR with ROA, CPLR with ROA, NPL with NIM, and LLPR with NIM.

Performance Analysis of Islamic Banks Using Error Correction Model

Introduction: The analysis of Islamic banking performance is a frequent subject of discussion in various literature. One factor that makes Islamic banks an exciting object of research is their role as Sharia-based intermediary institutions and their contribution to the effectiveness of monetary policy. This study aims to analyze the impact of CAR, NPF, FDR, and BOPO on the performance of Islamic banks measured by ROA and NOM. Research Methods: This quantitative research uses secondary data from Islamic Banking Statistics covering the period from January 2015 to December 2023. The data analysis technique employed is the Error Correction Model (ECM). Results: The results indicate that out of the four variables examined, only BOPO has a significant impact on the performance of Islamic banks. Conclusion: This finding suggests that efficiency in managing operational costs is a crucial factor in enhancing the financial performance of Islamic banks. The lower the BOPO, indicating higher cost efficiency, the better the performance of Islamic banks in terms of profitability as measured by ROA and NOM.

Getting a Lift: The Impact of Aerial Cable Cars in La Paz, Bolivia

Getting a Lift: The Impact of Aerial Cable Cars in La Paz, Bolivia

Profitability in State-Owned Enterprises Banks Listed on the Indonesian Stock Exchange 2019-2023 as an Effect of CAR, TATO, and NPL

The world of banking plays a crucial role in society and the government. Banks serve as a vital indicator of a country's progress, making them the lifeblood of its economy. As domestic banking becomes more advanced, the competition between banks is intensifying. Just as a financial analyst would recommend, every bank must strive to secure funds and leverage their resources, management, and technology to achieve optimal efficiency and effectiveness in combating competition. This research seeks to analyze the impact of CAR, total asset turn over (TATO), and NPL on profitability (ROA) in state-owned banks listed on the Indonesia Stock Exchange from 2019 to 2023. The data analysis technique in this research utilizes path analysis. Through data collection, a total of 4 state-owned banks were included in this research. These banks have published financial reports for a span of 5 years, resulting in a dataset of 20 data points. The data collected was analyzed using a tool commonly employed by financial analysts to conduct panel data linear regression analysis. According to the research findings, it is evident that CAR has a noteworthy positive impact on Profitability (ROA). Additionally, TATO also has a positive and significant influence on Profitability (ROA). On the other hand, NPL exhibits a negative and significant effect on Profitability (ROA).

ПРОБЛЕМЫ И МЕТОДЫ СОВЕРШЕНСТВОВАНИЯ АВТОСЦЕПНОГО УСТРОЙСТВА ГРУЗОВЫХ ВАГОНОВ С УЧЕТОМ ОСОБЕННОСТЕЙ ЭКСПЛУАТАЦИИ

The problems to operate the automatic coupling device are considered, taking into account significant changes in the operating conditions of freight cars. The operation experience of freight car automatic coupling devices of domestic railways and the United States of America is analyzed; common problematic issues are identified. Approaches to the study of modes of longitudinal-dynamic impact of cars are defined, a simplified model is given. There is a need to change the design of the automatic coupling device of freight cars by using two sequentially arranged blocks with working elements, as well as improving the properties of the working material of absorbing devices, especially in operating conditions over a wide temperature range.

A green laboratory approach to medical sample transportation between two medical laboratories: Assessing the environmental impact of drone, combustion car, and electric car transportation of medical samples

A green laboratory approach to medical sample transportation between two medical laboratories: Assessing the environmental impact of drone, combustion car, and electric car transportation of medical samples

Comparative Assessment of the Prospects for Hydrogen Fuel Cell Electric Vehicles

Today, road transport is one of the main environmental pollutants. It accounts for more than half of all emissions. In this regard, the issue of developing measures to reduce the impact of cars on the environment is gaining relevance. There are various approaches to solve this issue, but the most promising direction is the use of electric vehicles. It should be noted that we cannot talk about their absolute environmental friendliness, since there is still an indirect impact on the environment.The paper examines the prospects for the use and disadvantages of two types of electric vehicles powered, respectively, by battery or hydrogen fuel cells. Currently, production of battery electric vehicles is a more popular direction, which is largely due to development of technologies in the field of battery production. At the same time, one should not completely exclude other areas, such as hydrogenfuelled vehicles. Such vehicles are distinguished by good environmental friendliness, which is determined by the nature of the combustion product and the possibility of obtaining this type of resource. However, the use of hydrogen as a fuel for internal combustion engines is not relevant. Development of a car with an electrochemical generator is more promising. Today, a fairly large number of the world’s leading car manufacturing companies are advancing in this direction.The electric vehicles considered in the work have similar emissions of harmful substances, which, under equal conditions, approach zero. However, both types of vehicles leave a carbon footprint, the bulk of which comes from electricity generation and hydrogen production. The study carried out a comparative assessment of the quality characteristics, carbon footprint and operating costs of electric vehicles with various types of power plants under Russian operating conditions. Based on the comparison, the main advantages, and disadvantages of those types of electric vehicles have been identified. Actions are proposed to increase the environmental friendliness of electric vehicles and solve problems that complicate their operation.

Modeling the Environmental Impact of Passenger Cars Driven on Hilly Roads in Austria: A More Accurate Valuation of Greenhouse Gas Emissions and Further Environmental Indicators for Integral Life Cycle Assessments of Road Infrastructures

Previous studies of road or railway infrastructures have shown that traffic emissions outweigh the environmental impacts of the product stage and construction stage over the entire life cycle. Traffic usage is therefore the main emitter over the life cycle (A1–C4). Due to the small number of sustainability assessment systems, the question of how to consider traffic emissions in detail in an integral life cycle assessment has arisen. This study examines Austrian car traffic and investigates environmental impacts beyond the scope of carbon dioxide and particulate matter. The results were determined for a selection of common impact indicators. In addition to driving in flat terrain, an approach is presented that enables the evaluation of emissions due uphill and downhill driving. Thus, route options and route closures/detours due to maintenance work can be evaluated in a simple way. During the analyses, a traffic calculator was developed, which can currently assess different cars depending on the route specifics (flat/hill). The tool can be expanded to include other road vehicles (buses, trucks, motorcycles) and trains as well. This will simplify evaluations and decision-making processes and provide optimal support for a future-proof sustainable built environment.

СОВЕРШЕНСТВОВАНИЕ КОНСТРУКЦИЙ ЖЕЛЕЗНОДОРОЖНОГО ПОДВИЖНОГО СОСТАВА НА ОСНОВЕ УЧЕТА ДЕФОРМИРОВАНИЯ ТРАНСПОРТИРУЕМОГО ГРУЗА

The features of solving problems on the railway rolling stock design dynamics and strength on the basis of computer modeling in engineering packages of solid-state and finite element analysis are considered taking into account high deformability of the transported cargo. There are demonstrated the results of the analysis of rails fastening dynamics for the case of rails transportation on the coupling of railway platforms. The stresses and deformations in the C11N17 T11 tank container at the longitudinal impact of cars are investigated. There is presented the analysis of the bulk cargo cohesion influence on the forces acting the car body at the collision of cars. The obtained results make it possible to analyze the transportation safety and to predict the safety of cargo with various geometric and physical characteristics during rail transportation.

Analysis of the mechanism of side impact of cars

Problem. Globally, car crashes are the major cause of death, killing 1.2 million people, and despite improvements in car safety, forecasts indicate that car crash deaths will increase significantly by 2030 due to the increase in the number of cars. Such a trend requires an increase in passive safety in the design of cars. It is also necessary to consider with these factors the most popular segments of SUV cars, which during an accident create more dangerous consequences in the event of a side impact, taking into account the mass and dimensions parameters. Goal. The aim is to conduct an analysis of the side collision mechanism of cars of different mass and dimensional parameters. Taking into account the trends in the sale of cars, identifying the most popular classes of cars in Ukraine both on the new car market and on the second-hand market, to further identify problems in testing cars according to various certification protocols. Methodology. The approaches to solving the tasks used in the work are based on the use of statistical data and comparative analysis of various methodologies and certification protocols. Results. Considering that scientific studies of frontal impact are presented by the scientific community in the broadest form, the study of the side impact of two cars is currently a relevant direction, taking into account the global trend towards the production of cars in the SUV segment, which exceed passenger cars in terms of mass and dimensions. In a road accident with a side impact of a passenger car and an off-road vehicle of the SUV segment, we will get a large difference in the height of the primary impact, which is 250 millimeters. That is, all the energy of the impact to the side of the passenger car falls not on the safety bar, but 250 millimeters higher, which will inevitably lead to fatal injuries to the driver and passenger. Unfortunately, the European NCAP and the US National Highway Traffic Safety Administration use moving barriers that are similar in terms of mass and dimensions to an average passenger car. Originality. The obtained results of the analysis of the mechanism of the car side collision make it possible to evaluate the current trend of the automobile market in terms of passive safety and, in particular, to conduct certification tests for side impact in a new way. Practical value. The obtained results can be recommended when studying the structural features of preparing and conducting crash tests.

The influence of financial performance on profitability of sharia commercial banks in Indonesia using the CAMEL method

IntroductionResearch on Islamic commercial banks in Indonesia have been extensively conducted, with a focus on banks in general and large banks. However, research specifically targeting medium-sized banks, namely PT Bank Muamalat Indonesia, PT Bank Mega Syariah, PT Bank Panin Dubai Syariah, PT Bank BCA Syariah, and PT Bank KB Bukopin Syariah, is still limited.ObjectivesThis study aims to examine the influence of the financial performance of Islamic banks on their profitability using the CAMEL indicator.MethodThis research is quantitative with a correlational approach. The population in this study consists of 12 Islamic commercial banks in Indonesia, with 5 of them selected as samples. The sampling technique used is purposive sampling. The study utilizes secondary data from quarterly financial ratio reports of Islamic banks published by the Financial Services Authority (OJK). The analysis involves evaluating the impact of CAR, NPF, NOM, BOPO, and FDR on ROA using multiple linear regression analysis.ResultsThe findings indicate that, partially, CAR and NPF do not significantly affect the ROA of Islamic banks. However, NOM, BOPO, and FDR have a significant impact on the ROA of Islamic banks.Implicationsthe research motivates Islamic bank management to improve their financial ratios to meet the health criteria set by Bank Indonesia (BI) and OJK. Maintaining healthy financial ratios has implications for the level of trust that customers and potential customers have in Islamic banks and ultimately determines the long-term existence of these banks.Originality/NoveltyThis study contributes to the development of risk management theory by examining the factors influencing the fluctuations in the values of CAR, NPF, NOM, BOPO, and FDR on the ROA of Islamic banks.

Environmental impact of autonomous cars considering platooning with buses in urban scenarios

Platooning is an essential strategy for exploiting the benefits of connected and autonomous vehicles (CAV). Quantitative research is needed to understand the factors of influence, evaluation indicators, and analytical granularity of the environmental impacts of platooning fully. This study was performed to estimate the energy consumption and emissions impacts of platooning from an aerodynamics perspective under complex urban road conditions using low-cost methodology. Speed, acceleration, spacing, platoon composition, and vehicle position were analyzed. An aerodynamic analysis platform was established based on the lattice Boltzmann method (LBM). Energy and emissions models were developed based on vehicle specific power (VSP) to establish a mapping relationship between operating and environmental impacts. An impact estimation method based on the LBM and VSP is proposed. Vehicle test data were collected for a case study, and multiple scenarios were analyzed. The results show that high speed, low acceleration, and small spacing can improve the environmental benefits of platooning. The most significant benefits were achieved in the following vehicle position of the Bus–Car platoon scenario, with a maximum energy reduction rate of 61.26 % and a maximum emissions reduction of 56.23 %. The study contributes to designing management strategies and trajectory optimization considering the environmental benefits of platooning.

Timing of Vaccination Impacts Serological Response to COVID-19 Myeloma Patients after BCMA-Targeted CAR T

Whereas COVID-19 mRNA vaccines have shown remarkable efficacy in the prevention of severe disease and mortality in healthy individuals, the effectiveness in cancer patients has been more variable. Patients with multiple myeloma (MM) are at a high risk for severe infection due to disease- or treatment-related immune suppression. Our prior work demonstrated that the immune response to SARS-CoV-2 immunization in MM patients with 2 doses of mRNA vaccine was suboptimal and that a 3rd dose significantly improved neutralization of viral variants. MM patients undergoing treatment targeting BCMA were among those at a higher risk of ineffective immune responses. As BCMA-targeted (CAR T) treatment becomes more widely available, guidance on initiation of vaccination after treatment is needed. To assess the impact of BCMA-targeted CAR T (BCMA CAR T) on the serological immune response to COVID-19, we studied 45 MM patients who received ≥1 dose of a COVID-19 mRNA vaccine after prior BCMA CAR T. We collected demographics, disease/treatment characteristics, and COVID-19 infection/vaccination data via retrospective chart review. We analyzed SARS-CoV-2 spike-binding (anti-spike) IgG level using a validated assay (FDA/EUA approved Kantaro). Cumulative incidence of COVID-19 was analyzed using Kaplan-Meier statistics. All subjects were enrolled to studies approved by the Institutional Review Board at a single US academic hospital. Our cohort consisted of 16 women and 29 men with a median age of 61 years. The patients had received a median 6 lines of treatment and 33/45 (73%) had an ongoing response to BCMA CAR T. Patients received dose 1 at median 567 days after CAR T infusion (range 73-1,374 days). 36 patients (80%) received ≥3 doses and 17 (38%) received ≥4 doses. Across the cohort, anti-spike IgG levels increased from median 8 AU/mL after a single dose to 91, 474 and 612 AU/mL after 2, 3 or 4 mRNA vaccine doses respectively. After 2 doses, 6 patients (of 28 for which the timepoint was available, 21%) had no detectable anti-spike IgG levels, whereas all patients in the cohort had a detectable serological response after ≥3 vaccine doses. We compared the 13 patients (29%) that initiated mRNA vaccination at <12 months (mo) after CAR T infusion (i.e. “early vaccination”) with those who received the first dose after >12 mo. In the early vaccination group, anti-spike IgG levels were significantly lower when measured 0-3 months after 2 vaccine doses (p<0.01). Serological responses were not different when measured after 3 or 4 doses respectively (Fig A). Nevertheless, after 3 vaccine doses, 30% of patients (3/10) in the early vaccination group had anti-spike IgG <100 AU/mL, a level previously shown to be associated with less effective viral neutralization, versus only 5% (1/20) of patients in the group that started vaccination > 12 mo after CAR T. Twenty-four patients (52%) developed a documented COVID-19 infection after vaccination. Of these, 21 (88%) were characterized as mild (i.e. not requiring hospital admission); two patients required hospitalization and recovered, and 1 patient in the early vaccination group passed away from COVID-19. Of note, in the early vaccination group, there was a non-significant trend towards earlier breakthrough infections (Fig B, p=0.16), consistent with the finding of a delayed serological response with suboptimal antibody levels after 2 doses. In this study, all MM patients who initiated mRNA vaccination after prior BCMA CAR T therapy had detectable anti-spike IgG after ≥3 vaccine doses. However, starting vaccination against COVID-19 early (i.e. within 1 year) after CAR T therapy does not result in protective levels of antibody as quickly and to the same extent as when vaccinated >1 year post CAR T infusion. Patients starting vaccination within 12 months need ≥3 doses to achieve comparable serological efficacy to later initiation. A trend towards earlier breakthrough infections suggests that study of neutralizing titers against variants and comprehensive immune phenotyping may be needed to confirm effective immunity in these vulnerable patients. For the first year after CAR T cell therapy, adherence to preventive measures and passive immunization with IVIG with higher titers of anti-spike IgG may be warranted. Analyses comparing this cohort with MM patients receiving other modalities of BCMA-targeted therapy incl. bispecific antibodies are ongoing and will be presented at the meeting.

Sexual Health in Young Adult Patients after Chimeric Antigen Receptor T-Cell Therapy

Background: Chimeric antigen receptor T-cell therapy (CAR T) has shown significant promise for treating relapsed/refractory hematologic malignancies. Although there is growing literature on immune mediated toxicities, studies examining late effects and survivorship concerns are limited. Sexual health is an important survivorship issue with implications for overall health-related quality of life (HRQOL) and is particularly relevant for young adults (YAs) aged 18-39 years. For YAs, cancer co-occurs with a critical period of physical and psychosocial development during which romantic relationships are formed and physical, psychosocial, and sexual milestones are achieved. No studies have evaluated sexual health among YAs treated with CAR T. To address this knowledge gap, we conducted a mixed methods study to examine sexual health and HRQOL after CAR T among YAs and explore communication about sexual health between YA CAR T recipients and their healthcare providers. Methods: This was a cross-sectional, single center study conducted at Moffitt Cancer Center. Participants were adults aged 18-39 years treated with CAR T. Participants were asked to complete a one-time survey and an individual semi-structured interview. The survey included short form measures from the Patient-Reported Outcomes Measurement Information System (PROMIS) assessing sexual health (desire/interest in sexual activity, sexual function, sexual satisfaction) and HRQOL (depression, anxiety, fatigue, sleep disturbance, pain interference, global pain, physical function, social function, cognitive function, emotional impact). PROMIS scores were calculated as T-scores with a normative M=50, SD=10, and a minimally important difference (MID) of 5 points. The survey also included study-specific items assessing patient-provider communication about sexual health. For qualitative data collection, a semi-structured interview guide was used to assess the impact of cancer and CAR T on participants' sexual health and HRQOL, as well as patients' experiences with communicating about sexual health with providers, partners, and their broader support system during and after treatment. Preliminary analysis included descriptive statistics for quantitative data in relation to evidence-based thresholds, and a preliminary thematic analysis of qualitative data. Results: In total, n=13 YA CAR T recipients completed the study survey, and n=10 agreed to participate in individual semi-structured interviews. Participant characteristics are depicted in Table 1. Median age of participants was 35 years (range: 21-39), 61.5% identified as male, and the majority (92.3%) identified as heterosexual. Median time since CAR T infusion was 30 months (range: 1-50). Quantitative data overall and by biological sex are summarized in Table 2. Average interest in sexual activity was low among females (M=35.1, SD=10.0) but not males (M=48.7, SD=10.3). All other average scores were within normal ranges. Several differences in average scores between males and females exceeded the 5-point MID, with female participants reporting less interest in sexual activity, worse fatigue, more impaired social function, and worse emotional impact. Most YAs had not discussed (46.2%) or did not remember discussing (38.5%) sexual health with a healthcare provider before CAR T. Most (76.9%) had not discussed sexual health with a healthcare provider since receiving CAR T. Three major themes emerged from the qualitative data: 1) YAs perceive a lack of awareness of YA sexual health priorities among their healthcare team, 2) There is a lack of communication and information about potential sexual health side effects after CAR T, and 3) Parents as caregivers are a barrier to YAs communicating with their healthcare team about sexual health. Conclusion: This was the first study to explore sexual health outcomes among YA cancer survivors treated with CAR T. Findings highlight a need for improved patient-provider communication regarding sexual health and more publicly available educational resources. Providers may prioritize one-on-one discussions with patients and limit parent involvement when discussing sexual health needs. As the population of CAR T survivors continues to grow, it is imperative to examine patient reported outcomes and late effects to improve survivorship outcomes. Author Note: AB & VIG share first authorship. LO & RF share senior authorship.

A Study on the Impact of Electric Cars on Diesel Cars

A Study on the Impact of Electric Cars on Diesel Cars

The impact of company cars on car ownership

The impact of company cars on car ownership

Biosynthesis of Zinc Oxide Nanoparticles on l-Carnosine Biofunctionalized Polyacrylonitrile Nanofibers; a Biomimetic Wound Healing Material.

Multifunctional biohybrid nanofibers (NFs) that can simultaneously drive various cellular activities and confer antibacterial properties are considered desirable in producing advanced wound healing materials. In this study, a bionanohybrid formulation was processed as a NF wound dressing to stimulate the adhesion and proliferation of fibroblast and endothelial cells that play a major role in wound healing. Polyacrylonitrile (PAN) electrospun NFs were hydrolyzed using NaOH and biofunctionalized with l-carnosine (CAR), a dipeptide which could later biosynthesize zinc oxide (ZnO) nanoparticles (NPs) on the NFs surface. The morphological study verified that ZnO NPs are uniformly distributed on the surface of CAR/PAN NFs. Through EDX and XRD analysis, it was validated that the NPs are composed of ZnO and/or ZnO/Zn(OH)2. The presence of CAR and ZnO NPs brought about a superhydrophilicity effect and notably raised the elastic modulus and tensile strength of Zn-CAR/PAN NFs. While CAR ligands were shown to improve the viability of fibroblast (L929) and endothelial (HUVEC) cells, ZnO NPs lowered the positive impact of CAR, most likely due to their repulsive negative surface charge. A scratch assay verified that CAR/PAN NFs and Zn-CAR/PAN NFs aided HUVEC migration more than PAN NFs. Also, an antibacterial assay implied that CAR/PAN NFs and Zn-CAR/PAN NFs are significantly more effective in inhibiting Staphylococcus aureus (S. aureus) than neat PAN NFs are (1000 and 500%, respectively). Taken together, compared to the neat PAN NFs, CAR/PAN NFs with and without the biosynthesized ZnO NPs can support the cellular activities of relevance for wound healing and inactivate bacteria.

Establishing the effectiveness of life cycle assessment to assess the environmental impact of passenger cars using biofuels: A Review

Predictions and decisions made by legislators may be partially or wholly informed by the results of life cycle assessment studies, but the outcomes can vary significantly. This review seeks to establish whether existing life cycle assessment study results are accurate and if there are errors or deficiencies in life cycle inventory databases, chosen methodologies, or choice of life cycle assessment tool that may impact the outcome of life cycle assessment studies. The context of the work is set against the role bioethanol/gasoline blends might play in reducing the environmental impact of internal combustion engine-powered vehicles. The findings indicate inaccuracies exist and that there are various reasons for this. The accuracy of life cycle assessment results is affected by differences and inconsistencies that occur between life cycle inventory databases, the choice of life cycle inventory databases and life cycle assessment tools and because, in many cases, life cycle assessment methodology does not specify whether the biofuel content in the fuel is considered. The increase in the average age of biofuel-compatible passenger cars challenges the validity of results obtained by employing the commonly used approach based on fixed annual mileage profiles and lifetime activity. Uncertainty is a significant factor, and more attention should be paid to uncertainty analysis. Evidence shows the use of biofuels can deliver considerable environmental gains and reductions in CO2, especially in blends containing a higher percentage of biofuel.