Audi’s 435-hp SQ7 gets electric supercharger to top diesel-power race

Audi is giving electric superchargers their first production application with the SQ7 as it leads the race to increase diesel-engine power. The SQ7, a sporty variant of the Q7 large SUV, will debut a V-8 4.0-liter diesel engine that adds an electric supercharger to two traditional turbos.

“The SQ7 is a strong confirmation of Audi’s technology leadership and of our belief in diesels,” CEO Rupert Stadler said on the sidelines of the automaker’s financial results presentation on March 3.

Stadler said the SQ7 will be the world’s most powerful automotive diesel engine, but will also offer reasonable fuel consumption figures.

With 435 hp of power and 900 Nm (663.8 lb ft) of torque between 1,000 and 3,250 rpm, the SQ7 diesel has a sportscar acceleration, sprinting from 0 to 100 kph (62 mph) in 4.8 seconds and on upwards to a 250 kph (155 mph) electronically limited top speed. In the New European Driving Cycle (NEDC), the SQ7 uses 7.4 liters per 100 kilometers (31.8 U.S. mpg/38.1 UK mpg) which equates to carbon dioxide emissions of 194 grams per kilometer (312.2 g/mile).

The SQ7’s V-8 diesel becomes VW Group’s biggest automotive diesel engine after the company stopped production of its V-10 and V-12 units. The engine easily outperforms its German rival’s engines, which are 3.0-liter 6-cylinder units. BMW’s 6-cylinder-in-line delivers 381 hp, while Mercedes-Benz’s top diesel is a V-6 delivering 258 hp.

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