Ask Honest John

Most recently answered dpf questions
I have a second hand 307 Peugeot which I bought last year June. Last week I let the fuel level run very low and due to this the "Antipollution fault" light came on; and caused the car to jerk. The warning...
My 2010 Mazda 3, 2.2 diesel 185 bhp Sport can return 60 mpg on an extra-urban round trip of say 10 miles or so but should i make a few stops on the way, the fuel consumption goes up like there's a tap...
Pleased to hear the Suzuki Swift 1.3 diesel has a chain driven camshaft. Apart from the DPF issue would you say the Fiat engine built in India is a reliable one? As good as a Mercedes-Benz diesel? I currently...
I have a Passat Estate diesel and have read your comments regarding the problems of the DPF. On a couple of occasions recently the engine fan has continued to run after a short journey. Since then I have...
I was interested in your comments about letting a very hot turbo idle for 30 seconds before switching off. Am I correct in interpreting this as applying to all turbos regardless of make of car? Last December...
You often point out the problems of failing DPFs on higher mileage diesels, especially in Volkswagen models. Does the same apply across all manufacturers - my daughter is looking to buy a large second...
I am looking for a used Skoda Superb estate as our family car as I am 6-feet 3-inches and my teenage sons are 6-feet 5-inches and 6-feet 1-inch (and growing). We also have two Labradors to transport. The...
I am considering purchasing a high spec double cab pick-up for use as a family car and 'gardening/camping' duties. My mileage would be some 6000 per annum and the longest average journey would be some...
A quick Google search shows lot of companies are offering DPF removal. I can see this as an option that would be considered by many with DPF issues. As I understand, cars are 'type approved' to a certain...
My Suzuki Swift diesel has come to end of warranty and now offered extended warranty. Would this be worth it and what should I look for, and would DPF be included? Car is three years old, just had MOT...