High-Mileage EVs More Reliable Than Petrol Cars, Study Finds

Electric vehicles (EVs) with significant mileage demonstrate greater reliability compared to their petrol counterparts, according to a comprehensive study. An analysis encompassing 47.4 million MOT (Ministry of Transport) tests, a mandatory vehicle inspection in the UK to ensure roadworthiness, revealed a notable trend: EVs driven between 90,000 and 120,000 miles were approximately 25% less likely to fail their MOT tests than petrol vehicles of the same age. This finding is based on a failure rate of 16.5% for high-mileage EVs versus 22.1% for high-mileage petrol cars. The study's data suggests that motorists considering the purchase of a used car with substantial mileage may find an electric vehicle to be a more dependable option.

The implications of this study are significant for the used car market, where concerns about the long-term durability of electric vehicle components, particularly batteries, have persisted. While battery degradation is a known factor in EV ownership, this research indicates that the overall mechanical complexity of EVs, which generally have fewer moving parts than internal combustion engine vehicles, contributes to their superior performance in high-mileage scenarios. Petrol cars, conversely, are subject to wear and tear on a more extensive array of components, including engines, transmissions, exhaust systems, and fuel injection systems, all of which can contribute to MOT test failures.

The MOT test assesses various aspects of a vehicle's condition, including brakes, lights, steering, suspension, tires, and emissions. A failure in any of these categories necessitates repairs before the vehicle can be deemed roadworthy. The study's findings imply that the core systems of EVs are more resilient to the stresses of extended use, potentially due to simpler mechanical designs and fewer points of potential failure. This contrasts with the intricate nature of petrol engines, which require regular maintenance and are susceptible to a wider range of mechanical issues as they age and accumulate mileage.

This research provides valuable data for consumers navigating the increasingly diverse used car market. As the automotive industry continues its transition towards electrification, understanding the long-term reliability of different powertrain types is crucial for informed purchasing decisions. The study's concrete figures offer a quantifiable advantage for EVs in terms of passing mandatory roadworthiness tests at higher mileages, potentially shifting perceptions and encouraging greater confidence in the used EV sector. The analysis of such a large dataset of MOT tests offers a robust statistical foundation for these conclusions, moving beyond anecdotal evidence to provide data-driven insights into vehicle longevity.