Ask Honest John

Most recently answered diesel cars questions
I have recently had the E189 emissions software update on my Volkswagen Golf VI 2.0 TDI. On the way from London to Cornwall the glow plug warning light started flashing and the car went into limp mode....
Can you publish some advice about the owners considering whether to get the Volkswagen "fix" being applied to EA189 engines actually implemented? I sold my 2011 Audi A3 2.0 TDI to my girlfriend's mother...
I own a 2013 Skoda Octavia Scout 2.0 TDI (42,000 miles). I've had two letters from Skoda inviting me to have the emissions fix undertaken, but I am happy with the car. Do I need to have the fix done, or...
When were DPFs introduced?
What year were DPFs introduced by Ford and Vauxhall. Also is there anything out there that can really clean them, apart from long drives?
I have a Volvo S80 D5 and regularly do long journeys but not at more than 3000 revs. Should I drop a gear to keep revs up to clean the DPF?
I have just had my 2.0-litre Volkswagen Golf emissions fix and there is now a top end knock/rattle that my local Volkswagen garage say they are unaware of. The car is so loud that it is unsalable. Why...
I want to buy a three/four year old Volkswagen Golf VII for around £10,000-13,000, which has covered about 30,000 miles. Which engine and fuel type do you recommend? We cover around 10,000 miles a year...
My 2013 Volkswagen Scirocco 2.0 TDI DSG recently went for its emissions recall fix and since then it has gone into DPF Regeneration mode every 150-200 miles. It feels very rough under idle mode and is...
I recently changed jobs and will now be required to commute 30,000 miles per year, compared to previously 7000 miles. I have a 2015 Ford Focus which I purchased new before changing jobs that currently...