Abstract

This paper examines the pricing behaviour of the downstream petroleum product market in New Zealand using multivariate error correction models. The unique feature of these models is the use of actual weekly wholesale and retail prices of diesel and unleaded petrol to measure the relative rigidity of domestic prices. The results suggest that price adjustments in domestic markets in response to price changes in world crude oil markets and refined product markets are very weak. Domestic wholesale prices appear to be the key variable in determining retail prices. Lack of competition in the wholesale sector is found to be the main reason for weak price adjustments.

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