The group said it was closely monitoring the consumer mood due to political and economic uncertainties, but trading over this year so far had been healthy.
Motorpoint is the UK’s largest independent dealer with 12 outlets and concentrates on nearly new vehicles up to two years old.
Sales in the half year to September will be about 9% higher than a year ago.
The breadth and quality of its stock were also strong going into the second half, said Motorpoint, adding it had been encouraged by the recent trading performance.
Motorpoint believes it can further increase market share and is looking at potential sites for the new outlet.
The outlook for car sales overall has been clouded recently due to worries over lending and consumer finances.
Figures yesterday from the Society of Motor Manufacturers showed new sales dropped by a fifth in September, though this was blamed on new emission standards hitting the availability of cars.
Dips in new cars sales take time to trickle through into prices for second-hand cars.
Shares in Motorpoint were unchanged at 203p.