Ask Honest John

Most recently answered owning questions
I brought a brand new Mercedes-Benz GLA 220d last September. Within three months of ownership my engine management light came on and the cars power was restricted. The earliest Mercedes-Benz could book...
I have a 2016 Toyota Auris Hybrid and the electric engine appears to have a very short range. On the indicator of battery power you can never get it fully charged, there are two empty bars at the top end...
I have a 2010 Volkswagen Passat CC automatic diesel. It's started to judder when I start it. Any ideas what it could be? It's driving me mad.
I own a 2014 Volvo V40. I've had it since new and just reached 49,000 miles. Last week, I began hearing an unwelcome noise whilst driving and left the car with my mechanic to locate the source of the noise....
The passenger door of my Peugeot 807 has locked itself. What should I do?
My Honda CR-V has an intermittent fault, when in first gear - it jumps out of gear. I've taken it to the dealership, who've said they have put it on their machine and can't find anything. They say nothing...
What's the knocking in my 2008 Volkswagen Transporter?
Whilst driving along, my 2012 Mazda 3 1.6d (39,000 miles) suddenly juddered and went into limp mode. I cautiously negotiated to the hard shoulder with the dashboard lit up with maintenance, ABS, and warning...
Is it usual for a belt tensioner to go off centre and shred the belt? This was the case with our Peugeot 3008 at 28,000 miles.
I have a 2017 BMW 4 Series with 225/40 R19 tyres on the front and 255/35 R19 tyres on the rear (runflats). Over a two month period, both rear tyres have lost 0.3 bar and the front tyres 0.1 bar. The BMW...
 

Value my car