Most recently answered modifications questions

Yesterday in Lincoln I saw a 54 plate car wearing Bentley wheel inserts and a Bentley motif on it's rear number plate but with just a letter B on it's boot (could not see the front before it moved off)....

I recently bought a mesh infill for the grille on my S Type Jag; all above board - reputable specialist supplier etc. I thought I should tell my insurer of the 'modification' rather than have it come back...

You advised a reader that his BMW wheels were 'oversized' as original equipment and that he would be OK fitting smaller ones. My question is whether fitting the smaller wheels/tyres would count as a modification...

On retirement three years ago I bought myself a new C-Class Sport Mercedes-Benz and have done 30,000 miles. Its just had its first MOT and failed because of splits on the rear tyres. This is the third...

I am unable to drive at the moment as I have permanently hurt my anterior cruciate ligament and have no strength in my right knee. I obviously need a car that can be adapted. At the moment I have a Peugeot...

I have just purchased an XF premium luxury diesel. I let the dealer convince me that the 19-inch wheels and Dunlop Sport tyres as standard were great (they did not seem bad on the test drive after my very...

I have been offered a 2003/53 Mercedes-Benz SL500, which is immaculate with an AMG body kit, panoramic roof etc and has only done 27,000 miles. I have known this car for the past six years. It is available...

There seem to be a few different makes on the net. Do you have any reccommendations please?
(Thanks for a great column; always interesting)

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...