MOT Emissions Failure: Find the Cause Before the Retest
An emissions fail tells you the numbers were wrong but not why. Here is how to read the failure sheet, work out the likely cause, and avoid paying for a second fail.
AutoScan journal
emissions — Fault codes explained properly, what each one usually costs to put right, and how to check it yourself before anyone quotes you.
An emissions fail tells you the numbers were wrong but not why. Here is how to read the failure sheet, work out the likely cause, and avoid paying for a second fail.
Yes for most modern cars, but not for all of them, and the date your car was first used decides it. Here is exactly what the tester checks and why.
What the ECU is really measuring when it stores P0420, the cheaper faults that produce an identical reading, and how to check them in order before buying a converter.