Climate and Local Air-Pollutant Trade-Offs of Used Passenger Car Exports from Japan to Myanmar: A Screening-Level Per-Vehicle Assessment

Mengchen Zhao; Tie Lin

doi:10.47297/wspciateWSP2633-772X12.20260701

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Climate and Local Air-Pollutant Trade-Offs of Used Passenger Car Exports from Japan to Myanmar: A Screening-Level Per-Vehicle Assessment

Volume 7, Issue 1

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Climate and Local Air-Pollutant Trade-Offs of Used Passenger Car Exports from Japan to Myanmar: A Screening-Level Per-Vehicle Assessment
Climate and Local Air-Pollutant Trade-Offs of Used Passenger Car Exports from Japan to Myanmar: A Screening-Level Per-Vehicle Assessment
School of Resources and Environmental Engineering, Shanghai Polytechnic University, Shanghai, China
Vol. 7, Issue 1, Pages: 58-69(2026)
Online First：12 August 2026，

Published：28 February 2026
DOI：10.47297/wspciateWSP2633-772X12.20260701
Accepted：

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Zhao Mengchen,Lin Tie.Climate and Local Air-Pollutant Trade-Offs of Used Passenger Car Exports from Japan to Myanmar: A Screening-Level Per-Vehicle Assessment[J].Chinese Industry and Technology of Eco-environment,2026,07(01):58-69.
DOI：

Zhao Mengchen,Lin Tie.Climate and Local Air-Pollutant Trade-Offs of Used Passenger Car Exports from Japan to Myanmar: A Screening-Level Per-Vehicle Assessment[J].Chinese Industry and Technology of Eco-environment,2026,07(01):58-69. DOI： 10.47297/wspciateWSP2633-772X12.20260701.

摘要

Abstract

Used-vehicle trade can extend vehicle lifetimes and avoid new-vehicle production

but continued operation of older vehicles may increase fuel use and local air-pollutant emissions. This study develops a transparent screening-level

per-vehicle comparison between a 2010 Toyota Corolla Axio used-car benchmark and a 2020 Toyota Corolla Axio EX new-car benchmark in the Japan-Myanmar trade context. Historical trade and vehicle-registration data provide the market context

while the functional unit is 120

000 vehicle-kilometres of transport service in Myanmar over a ten-year operating period. The framework combines direct gasoline-combustion CO

scenario-based NO

and primary exhaust PM

2.5

emissions

new-vehicle manufacturing emissions

and an incremental international-transport burden. Under baseline assumptions

the imported used-car scenario emits 24.35 t CO

e per vehicle

versus 22.17 t CO

e for the new-car counterfactual

giving a net increase of 2.18 t CO

e. It also increases NO

and primary exhaust PM

2.5

emissions by 8.40 kg and 0.18 kg per vehicle

respectively. The climate ranking is conditional: parity occurs at a used-car fuel consumption of 7.83 L/100 km

a new-car fuel consumption of 6.87 L/100 km

a total assessed operating distance of approximately 82

900 km

or avoided new-vehicle manufacturing emissions of 7.15 t CO

e per vehicle. By contrast

the used-car scenario produces higher NO

and primary exhaust PM

2.5

emissions across all tested emission-factor assumptions. These findings show that vehicle-lifetime extension does not provide an automatic climate benefit and that fuel efficiency

remaining service life

and emission-control performance should be considered together. The results are screening estimates based on representative vehicles and scenario inputs

not fleet-wide measurements for Myanmar.

关键词

Keywords

references

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