Issues with exhaust, fuel and emissions
majorWhat Does This Mean?
Exhaust system integrity, catalytic converter, emissions levels. Diesel particulate filters (DPF) also checked.
How to Fix It
Fix exhaust leaks, replace catalytic converter or DPF if blocked. An engine service before MOT can help reduce emissions.
Most Affected Makes
Percentage of All Failures
4.9%
2,100,000 failures in 2023
Estimated Repair Cost
£50 – £1,000