The plug-in hybrid sedan makes its debut with the Le Mans-winning race car.

Porsche has given the new Panamera 4 E-Hybrid a spectacular debut, driving through the streets of London, England early this morning accompanied by the Le Mans-winning 919 Hybrid race car.

The route took the cars from Park Lane to the South Bank of the River Thames via Hyde Park Corner, Regent Street, Piccadilly Circus, Trafalgar Square, and Parliament Square, finishing at the London County Hall Hotel, right by the London Eye ferris wheel. Le Mans winner and reigning World Endurance Champion Mark Webber was at the wheel of the race car.

According to Porsche, the trip “demonstrated how [it] brings its successful hybrid technology from the race track to the road.”

The Panamera 4 E-Hybrid is powered by a 2.9-litre, twin-turbo V6 engine producing 330 horsepower and 332 pound-feet of torque, with an electric motor churning out 136 hp and 295 lb-ft of torque. Working together, that adds up to 462 hp and 517 lb-ft of torque.

Transmitted to the road through all four wheels, that translates to a 0 to 100 kilometres per hour (62 miles per hour) time of just 4.6 seconds, and a top speed of 278 km/h (173 mph), which is fast for any luxury sedan, never mind a hybrid.

Top speed running on electric power only is quoted at 140 km/h (87 mph), while range is a useful 40 km (31 miles). Charging the lithium-ion battery pack takes just under six hours from a standard 3.6 kW outlet.

The 919 Hybrid, meanwhile, is powered by a 2.0-litre, turbocharged V4 motor producing 500 hp and a 400 hp  electric motor for a combined 900 hp . Porsche claims its energy recovery systems are so efficient, they harvest enough energy during the 24 Hours of Le Mans to power a typical family home for three months. So far during the 2016 WEC season, the team has taken five wins from six races.

The Panamera 4 E-Hybrid will be on show at the Paris Motor Show and deliveries are due to start in spring of next year.

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