Car dealerships are in large supply of diesel cars due to high pump prices last year. Now is the time to buy a new diesel car as dealerships are reducing their prices by larger than normal. As it is now the end of the financial year and now is the time to grab a bargain on a new diesel car and make use of the tax break provided for in the May budget. As small businesses can be eligible for a 50% tax break and large businesses can be eligible for a 30% tax break, there really has never been a better time to buy a new diesel car.