MERCEDES-BENZ is offering free spec upgrades on two of its model ranges.

C-Class estate buyers can move up from an entry-level Classic trim to Classic SE, as well as receiving an automatic gearbox for free.

Customers can also upgrade further up the range, moving from Classic SE to Sport level. The move adds £1,950 of equipment at no extra cost. Elsewhere, CLK220 CDI buyers can now upgrade to range-topping Sport trim for free. This would normally cost £2,128.