Ask Honest John

Most recently answered diesel particulate filter questions
I'm considering purchasing a used Renault Trafic, although my question is about DPFs in general. So to start regeneration you should be driving motorway speeds to achieve high exhaust temperatures, how...
I am thinking of buying a Mazda CX-5 2.2 diesel automatic (2WD). I have two questions :- (a) Will the above vehicle be adequate to tow a caravan, 1300kgs gross laden weight, bearing in mind it is an automatic? (b)...
I bought a van to convert to a camper 8 months ago and due to the fact it has been stored as work has been done to it I have only just noticed the sliding door colour is different and on closer inspection...
Congratulations on a great motoring column. I have a 520 manual diesel, which is 7 years old with 72,000 miles on the clock. Oil changes at 10,000 miles. No indications of the chain death rattle. Best...
I have a 59 plate BMW 1 Series 118d. For the past few weeks the DPF light has been coming on after about 10 mins after driving. My local garage says the DPF is block and needs replacing. I asked if they...
I have a 2012 Vauxhall Corsa, it's done around 25,000 miles and recently it has been juddering as I go up the gears. I took it to the garage and they put it through diagnostic machines and no fault could...
I am a driving instructor and run a 2013 Toyota Yaris 1.4 diesel, with 50,000 miles on the clock. The car had a new DPF fitted six months ago with new software and a manual update. The filter has clogged...
I recently bought a 2007 Audi A6 Avant 2.0 TDI. It had previously been sitting idle for a month or two, but drove fine on the trip home. However, after a few days it struggled to start, before braking...
Is it possible to retro fit my 2011 Ford Kuga 2.0TDCI with a dashboard symbol that will warn me when the ECU triggers a DPF regeneration, so that I know not to switch off the engine till it has finished?
The Jaguar F-Pace perfectly fits my needs for my next vehicle, with one crucial exception - I only do about 6000 miles a year (short local runs plus a few long continental trips). That suggests I need...
 

Value my car

Save £75 on Warranty using code HJ75

with MotorEasy

Get a warranty quote

Save 12% on GAP Insurance

Use HJ21 to save on an ALA policy

See offer