Vauxhall is relaunching its range-topping Insignia VXR as the most affordable car to boast a supercar-rivalling 170mph top speed. Badged ‘Insignia VXR SuperSport’, its top speed is boosted by the removal of the speed limiter, which adds 15mph to its V-max.
At the same time, Vauxhall is slashing nearly £4000 off the Insignia VXR’s price by dropping it to £29,995.
There are no direct rivals to the VXR SuperSport as no other relatively affordable four-door saloon boasts a supercar-grade top speed. The Cayman S two-seater is the closest performance and price rival, with a 172mph top end and costing from £48,000.
Four-seaters with a 170mph top speed are even thinner on the ground. Autocar’s favourite BMW M5 boasts a 155mph top speed in standard form, and a £73,000 price.
The VXR SuperSport is not the first time that Vauxhall has launched a sledgehammer performance saloon. In 1990, when Vauxhall parent GM also owned Lotus, it turned the rear-wheel-drive Carlton executive saloon into a 176mph super-saloon.
Power came from a 377bhp twin-turbo 3.6-litre straight six. It was priced at £48,000, making the VXR SuperSport look good value in comparison.
The VXR SuperSport is powered by a 2.8-litre V6 engine, which gets a forged steel crank and alloy sump. It is equipped with a single twin-scroll, turbocharger.
The engine develops 320bhp and drives a torque-sensing all-wheel drive system. The car has adaptive damping and the sophisticated HiPer strut suspension at the front end in place of the conventional MacPherson struts fitted to mainstream Insignias.