2027 Audi A6 allroad – New V6 TDI and e-hybrid Technology

The new Audi A6 allroad 3.0 V6 TDI takes a very different approach to electrification. At its heart is a 3.0-liter turbocharged V6 diesel producing 299 horsepower and 580 Newton-meters of torque, but the real story is how Audi uses its MHEV plus technology to make the engine more responsive and efficient.

Unlike a conventional mild hybrid, the system combines a belt alternator starter, a powertrain generator, and an electrically powered compressor. The powertrain generator is integrated into the drivetrain and can provide up to 18 kilowatts, or about 24 horsepower, of additional electric assistance. This gives the A6 allroad an immediate response when the driver presses the accelerator, before the diesel engine reaches its strongest operating range.

Audi also uses an electrically powered compressor to support the conventional exhaust-driven turbocharger. Its compressor wheel can reach 90,000 revolutions per minute in only 250 milliseconds. When the driver demands power at lower engine speeds, the electric compressor quickly builds pressure while the main turbocharger catches up. The result is stronger response and less noticeable turbo lag.

The MHEV plus system can even move the vehicle electrically for short periods during parking, maneuvering, slow traffic, and certain low-load driving situations. When slowing down, the powertrain generator changes roles and recovers up to 25 kilowatts of energy.

The Audi A6 allroad e-hybrid takes electrification much further. It combines a 2.0-liter turbocharged 4-cylinder gasoline engine with an electric motor integrated into the 7-speed dual-clutch transmission. Together they produce 367 horsepower and 500 Newton-meters of torque.

A 25.9-kilowatt-hour battery allows the e-hybrid to operate as a genuine electric vehicle for everyday journeys. Depending on configuration, Audi quotes up to 102 kilometers, or about 63 miles, of combined electric range under the Worldwide Harmonised Light Vehicles Test Procedure.

In hybrid operation, the vehicle continuously decides whether to use the electric motor, gasoline engine, or both. Regenerative braking can recover up to 88 kilowatts, while navigation data can help determine when energy should be saved or recovered.

The difference is simple: the V6 diesel uses electricity to improve the combustion drivetrain, while the e-hybrid can use electricity as its primary source of propulsion for a significant portion of a journey.