Ask Honest John

Most recently answered maintenance and servicing questions
I have been well aware over the years of dealers adding things like screen wash top up to a service, even when not needed, so I always make sure its topped up before. Recently I had an annual service...
My Mercedes-Benz C250 CDI W204 is four years old with just under 32K miles on the clock. Yesterday it came back from its service and the dealer informed me I have two coolant leaks on the engine. Water...
The oil change service indicator on my Mazda 6 2.2 diesel has come on. The car is just under seven months old and has 6300 miles on the clock. Would you expect the oil change service interval to appear...
I have the air con of my Toyota Auris 1.6 diesel permanently switched on and set to air recirculating in all weathers. I was wondering when the air con system will and how often require maintenance? The...
How much should a new timing belt and water pump cost for a 2010 Audi A4 2.0 TDi?
I own a 2010 Ford Fiesta 1.6 diesel with 101,000 miles. Recently the cam belt failed. The car is back with the dealer who tell me that the DPF is blocked, which caused the cam belt failure. Is this likely?
My Hyundai Terracan is losing water. It appears to be coming from the radiator when the heater on. Any idea what's causing this to happen?
We are looking to buy a 2014 Peugeot 3008 with 19K miles. On discussing things with the dealer he told us they were chasing up the service history as the log book had no stamps. Then we were told he had...
I've just taken the plunge and bought a three year old BMW 320i. Following your advice, I am getting the oil changed at a maximum interval of one year/10k miles and I will use Shell V-power unleaded in...
Approximately how much should it cost to replace a speed sensor (and cabling) on a 2003 Ford Fiesta?