I've just taken delivery of this car, and the engine is noisy accelerating but I quite like that. However I also have a "thrumming" noise, it can change with road surfaces and may be the tyre choice. Very noticeable at 30 mph and a real bass-y boomer. Anyone got ideas or experiences to offer? Thanks. If I want to return the car i must do it pronto as going on holiday on Monday and will lose the opportunity.