The mats were presumably fitted by the dealer, as they are the standard ones that came with the car. They are ones that clip on to a couple of black mounting posts on the floor. During driving, the mat comes free from the mounts and then starts moving about.

I've just taken delivery of a new V50 SE Lux stop/start. Driving home last night I suddenly found the car acceleratingon its own - straight out at a junction. Fortunately, I had the presence of mind to hit the brake and get into neutral. I turned out that the floor mat on the driver's side had worke...