What do you think of plug-in diesel upgrades to improve fuel economy?

What is your opinion of plug-in diesel upgrades kits for increased mpg? Bearing in mind the high cost of diesel, are they worthwhile? How many miles would it take to recoup the initial layout cost? If...

Is it true that an electronic upgrade to my 2010 Audi A6 could increase the power to over 200hp?

There are a number of what look like reputable companies advertising simple-to-install electronic upgrades that are claimed to increase the power output and economy of turbo diesel engines. They also claim...

Can I change my 2004 Peugeot 206's self-adjusting clutch cable to a manual adjustment?

Can I change my 2004 Peugeot 206's self-adjusting clutch cable to a manual adjustment?

Is this Land Rover Freelander fitted with a kit intended to prevent head gasket problems?

I've been told by the garage from where I'm about to buy a 1999 Land Rover Freelander 1.8EXI that it has had a conversion kit fitted to stop the head gasket problems associated with them. Is this correct?...

Is it worth chipping my 2006 Ford Focus?

I am considering buying a chip for my 2006 Ford Focus 2.0 TDCI Diesel (136bhp) at a cost of £395. This is suppose to improve performance to 168bhp and improve fuel economy by 20 per cent. Could you tell...

How much will it cost to convert my 2005 Citroen Picasso for European headlights?

I need to change the headlights of my 2005 Citroen Picasso 1.6 as I would like to import the car to Spain. Can you give me an idea of the cost and where I could buy the units?

Where can I get a microfiche for a 2004 Vauxhall Vectra? I want to replace my EGR valve.

Where can I find a microfiche for a 2004 Vauxhall Vectra 2.0-litre diesel? I'm trying to see the pipework for the EGR system. My local Vauxhall dealer wants nearly £400 plus fitting for an EGR valve, and...

Can I add a sunroof to a Toyota Prius?

I'm thinking of buying a 3-4 old Toyota Prius for its economy and general good reliability, but I'd like a sunroof. Can this be added? I cannot afford the latest model, which I believe can be ordered with...

Is my Suzuki Grand Vitara supposed to hesitate under acceleration, and can I fit a remapping device?

My one-year-old Suzuki Grand Vitara has just reached 13,000 miles. Full torque on this engine is at 1950rpm, but the RPM pick up is slow. Then it seems like a switch is thrown and the engine develops a...

I've had my Peugeot 306 GTI's head gasflowed and the new valves seem wrong. Are they?

I have just had my Peugeot 306 GTI's head gasflowed with better cams. When I got it back I realised that on top of the valves there is a little dome recess. On one set of valves they are small and the...