Volvo UK sold a record 50,000 cars last year and 9% above 2017 in a market down by 7%.
It is part of the 640,000 sold by the Swedish brand in its best ever global year.
Asda has further cut pump prices.
But the RAC says supermarkets are no longer competing like they did for fuel sales and motorists are losing out on wholesale price cuts not being passed onto them.
Sixteen MB models from 2015 to this year are subject to recalls by American safety body.
Over 6,100 owners of the MB C and E class models are being told a steering lock nut may fail and directional control will be lost, so new racks are being fitted.
Allianz Insurance has launched a new motor insurance policy for Home and Legacy, a premium provider of cover to very rich clients.
It streamlines applications and is optimised for tablets with preloaded data.