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On the depreciation of automobiles: An international comparison

机译：关于汽车的贬值：国际比较

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摘要

Since older automobiles are less efficient and technologically obsolete, over-aged capital stocks are associated with higher environmental burden. Given the rapid growth of over-aged car stocks in many poor countries, the knowledge of depreciation data, depreciation patterns, and their determinants in developing countries becomes increasingly important for effective environmental policies. This paper refers to used automobile prices and generates depreciation data for a sample of 54 car models from 30 countries. We found the following results: (1) Overall, geometric depreciation appears to be a good approximation to real depreciation rates. (2) Depreciation rates are significantly lower in developing countries than in industrialized countries. (3) When using corrected prices the depreciation rates increase substantially. The average depreciation in OECD countries is 31%, whereas in non-OECD countries it is about 15%. Besides prices for new cars, the economic life of automobiles is particularly dependent on real income. In the long-run, an income increase by $1000 is likely to increase the annual depreciation rate by 2.7% in OECD countries and 3.6% in non-OECD countries.
机译：由于老式汽车的效率较低且技术过时，因此，过时的资本存量会带来更高的环境负担。鉴于许多贫穷国家中过度老化的汽车存货迅速增长，因此在发展中国家，有关折旧数据，折旧模式及其决定因素的知识对于有效的环境政策变得越来越重要。本文参考了二手车价格，并生成了来自30个国家/地区的54种车型的折旧数据。我们发现以下结果：（1）总体而言，几何折旧似乎是实际折旧率的良好近似值。 （2）发展中国家的折旧率大大低于工业化国家。 （3）使用校正后的价格，折旧率会大幅提高。经合组织国家的平均折旧为31％，而非经合组织国家的平均折旧约为15％。除了新车的价格外，汽车的经济寿命还特别取决于实际收入。从长远来看，收入增加1000美元可能会使经合组织国家的年折旧率增加2.7％，而非经合组织国家的年折旧率则增加3.6％。

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