Ask Honest John

Most recently answered dpf questions
In 2009 I bought a new Renault Laguna 2.0dCi 150 Initiale 50 diesel automatic. Can you tell me whether it has a diesel particulate filter, dual mass flywheel or an exhaust gas recirculation valve fitted...
We purchased a 2010 Golf 1.6TDI in September 2011 with 10,000 miles. It has now done 15,000 miles without any problems. My wife only does a low mileage and she usually keeps a car for seven or eight years....
I have a 2009 Renault Scenic 1.5 dCi Privilege 106 with 36,000 miles on the clock and I wish to replace it with something similar. I have reservations about a straight replacement as I feel the engine...
I currently own an Audi 2.0 S Line Avant, which my wife is now having difficulty getting in and out of. I do approx 15k a year, of which 10k is motorway. My budget to replace is around £11,000 and I have...
On my Citroen C5 2.0 diesel the DPF light intermittently comes on. At the same time, cruise control stopped working.
I have a 2001 Volkswagen Passat 1.9 TDI diesel. I understand that the car needs to travel a reasonable distance, say 20 or 30 miles, to ensure that the DPF does not clog. Do I presume that the diesel particles...
My son’s Peugeot 307 diesel particle filter additive low-level warning light has come on. Is this a major problem that only Peugeot can deal with? Or are there alternative mechanics that might be able...
I'm swapping my ten-year-old Ford Mondeo TDCI estate with 140,000 miles, which I've owned from new. It has been virtually faultless with no clutch or DMF problems. I have been offered, from a Jaguar main...
I've been looking at replacing my ageing Mk4 Golf GT TDi. After considering many options of new, I have decided the sensible financial option for now maybe to replace with a Mk5 Golf GT TDi (typical Golf...
In September 2010 we bought a new Skoda Yeti diesel. All was well for a few months, then the diesel particulate filter light started coming on. We had the filter cleared professionally but it happened...