Ask Honest John

Most recently answered dpf questions
I'm undecided whether to buy a petrol Jaguar F-Pace 2.5 T R-Sport or a 2.0 diesel AWD180 auto (which we have tried and is adequate). The 2.5 petrol is £3130 list more than the 2.0d. The petrol has urban...
How will the emissions update affect the EGR and DPF in my 2009 Audi A4 170PS diesel. It has only 64,000 miles of mostly motorway driving and has been maintained over recent years by an independent VAG...
The DPF on my 2009 Jaguar XF was professionally cleaned after going from amber to red. The car had done high mileage (104,000), so I was kind of expecting it. 13,000 miles after the clean, it went straight...
I have a 2014 Porsche Macan 3.0-litre diesel, bought new. It recorded 42mpg or better on a long run and 39mpg average on short urban runs. Porsche wrote asking for the car to have a software update for...
My Volkswagen dealer has advised against carrying out the emissions software update on my Golf Plus because they say there is a fault in the exhaust gas recirculation valve. The car drives fine and no...
My Audi Q5 has a smell like hot tarmac around the rear and exhaust area after a good run. It doesn't smell like oil and the oil level is steady after 500 miles. No smell under bonnet or car sides. What...
I want to trade in my 2011 diesel Nissan X-Trail 2.2 for a slightly smaller 4WD. I commute 50 miles a day, but need a 4WD for rough farm tracks. I have a budget of about £20,000 - £25,000 after trading...
My 2016 Toyota Yaris diesel fuel consumption meter indicates a large increase in consumption for about 25 minutes every 350-400 miles. Is this the DPF regenerating?
I own a 2011 Audi A6 Allroad 3.0 TDI 240PS 6 speed auto with paddle shifts (98,000 miles). Other than 10,000 mile oil changes, what would you recommend doing to keep this on the road for a few years? It...
I had the emissions update on my SEAT Ibiza 1.6 TDI Sportrider. Eight weeks later, the turbo blew. SEAT tried to blame me by saying there was too much engine oil. I got an oil sample done and the oil was...
 

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