Audi wipes out turbo lag: new 299-hp V6 TDI with electric compressor powers the Q5 and A6

The German brand debuts a thoroughly revised diesel engine featuring MHEV Plus technology and an innovative electric compressor that transforms throttle response.

Hybrid technology and dual boosting for instant power delivery

Audi has made a bold move with the introduction of its new 3.0-litre V6 TDI delivering 299 hp and 59.1 kgm of torque, now available in the Q5 and A6. For the first time, the brand pairs this engine with MHEV Plus and an electric compressor, a solution reminiscent of the sophisticated systems used in Formula 1 to eliminate power-delivery delays and enhance efficiency.

At the core of the setup is the MHEV Plus technology, a mild-hybrid system that integrates a motor generator, a belt-driven starter-alternator and a lithium iron phosphate battery. This configuration allows partially electric driving at low speeds, in traffic or during steady-state cruising, while also providing an additional 24 hp and 23.4 kgm during hard acceleration or overtaking manoeuvres.

Electric compressor: goodbye turbo lag

The standout innovation is the incorporation of an electric compressor that works in sync with the conventional turbocharger, creating a two-stage boosting system. Thanks to this architecture, the engine practically eliminates turbo lag, delivering strong torque from very low revs and offering an instant throttle response. The maximum boost pressure of 3.6 bar is reached almost one second faster, resulting in an acceleration feel similar to that of an equivalent-power electric motor, a trend directly inspired by hybrid racing powertrains.

Improved efficiency and a more dynamic drive

The synergy between the electric compressor and the motor generator not only enhances performance but also optimises fuel consumption and reduces emissions compared with previous V6 TDI generations. The result is a more agile, precise and responsive driving experience, positioning the Q5 and A6 as segment benchmarks in mechanical refinement and dynamic capability.

Compatible with sustainable HVO fuel

As a final technological highlight, the new V6 TDI is certified to run on HVO fuel, a renewable diesel produced from waste materials –including used cooking oil– and compliant with European standard EN 15940. This fuel reduces CO₂ emissions by 70% to 95%, placing Audi firmly on the path toward a more sustainable energy transition while maintaining high performance–an increasingly demanded balance and one that mirrors the strategies seen in high-performance categories such as Formula 1.