Brits warned over popular cars with ‘very low’ MOT pass rate

Motorists are being urged to check their vehicles carefully ahead of their MOT after new analysis highlighted a stark gap between the UK’s best and worst-performing cars.

Recent reports have warned that some widely driven models have exceptionally low MOT pass rates, with certain vehicles passing less than half of tests at the first attempt. Data shows the UK average pass rate sits at around 70–78%, meaning some cars are dramatically underperforming against the national benchmark.

The worst offenders are, unsurprisingly, largely older models from the late 1990s and 2000s. Topping the list is the Mitsubishi Space Star/Space Car, with a pass rate of just over 45%, followed closely by the Peugeot 807 and Citroen C8. Other models frequently failing include the Dodge Caliber, Daewoo Matiz, Citroen Grand C4 Picasso, Chevrolet Kalos, Chevrolet Aveo, Peugeot 307 and Chevrolet Lacetti.

Separate analysis also highlights similar low performers such as the Fiat Stilo and other ageing hatchbacks and MPVs, many of which struggle due to wear-related faults and poor long-term durability.

In contrast, a number of cars consistently achieve exceptionally high MOT pass rates, often exceeding 80% or even 95% in some cases. Models such as the Honda Jazz, Suzuki Swift and Toyota Aygo regularly feature among the most reliable, alongside SUVs including the Volkswagen Tiguan, Audi Q3, BMW X1 and Hyundai Tucson.

These higher-performing vehicles tend to benefit from stronger build quality and better long-term reliability, while premium cars and well-maintained vehicles also perform strongly due to more consistent servicing.

Industry data suggests that vehicle age remains one of the biggest factors in MOT outcomes, with failure rates rising steadily year-on-year as cars get older. Common issues include tyres, brakes, suspension and electrical faults, all of which are more likely to deteriorate over time.

For MOT testers and garages, the findings highlight clear trends in repeat failures, particularly among older budget models.

Motorists, meanwhile, are being reminded that even cars with poor historical pass rates can still succeed with proper maintenance. Simple pre-MOT checks, such as inspecting lights, tyres and fluid levels, can significantly improve the chances of a first-time pass.

With millions of MOTs carried out each year, the growing divide between the most and least reliable vehicles underlines the importance of preventative maintenance, and knowing whether your car is statistically more likely to pass or fail before it even enters the test bay.