Audi 3.0 V6 TDI (EA897evo4)

·November 27, 2025

Manufacturer: Audi AG
Production: 2025–
Engine family: EA897evo4
Configuration: 3.0-liter V6 TDI, 24-valve
Aspiration: Turbocharged with electrically powered compressor
Fuel system: Common-rail direct injection
Hybrid system: 48-volt MHEV plus (mild hybrid)
Output: 220 kW (299 PS)
Torque: 580 Nm
Applications: Audi Q5 (B10), Audi A6 (C9)

SUMMARY

The Audi 3.0 V6 TDI (EA897evo4) is a diesel engine introduced by Audi in 2025 for use in the facelifted Audi Q5 and Audi A6. It represents a significant evolution of the EA897 engine family, combining a revised three-liter V6 TDI with an expanded MHEV plus mild-hybrid system and a second-generation electrically powered compressor (EPC). The powertrain is positioned as a more responsive, more efficient, and cleaner alternative to earlier TDI engines, incorporating sustainable fuel compatibility and enhanced electrification.

OVERVIEW

The engine introduces a hybrid-diesel layout featuring three electrified subsystems: a belt alternator starter, a lithium iron phosphate (LFP) battery, and a dedicated powertrain generator that provides electric torque fill. The system enables limited electric-only operation at low speeds, improved acceleration response, and reduced fuel consumption.

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DESIGN & TECHNOLOGY

Electrically Powered Compressor (EPC)

The EA897evo4 incorporates a redesigned EPC, positioned downstream of the turbocharger and intercooler. Powered by the 48-volt electrical system, the EPC supports the exhaust-driven turbocharger in a two-stage charging configuration. Key characteristics include:

Maximum compressor speed of 90,000 rpm
Boost pressure rise of up to 3.6 bar, nearly 1 second faster than previous systems
Expanded operational range across the full engine speed band
Improved low-rpm torque and reduced turbo lag

Compared to earlier EPC-equipped Audi models (such as the S4, S6, and SQ5 TDI), the new unit offers greater airflow efficiency, wider usability, and a more direct throttle response.

MHEV plus Mild-Hybrid System

The engine features an upgraded mild-hybrid architecture, including:

Belt alternator starter (BAS): Handles engine restarts and charges the battery
Powertrain generator: Provides up to 18 kW (24 PS) and 230 Nm of torque during acceleration
LFP battery: Stores recuperated energy and stabilizes hybrid power flow

The system allows partially electric driving at low speeds, regenerative braking of up to 25 kW, and smoother power delivery during initial acceleration or overtaking.

PERFORMANCE & EFFICIENCY

Fuel consumption improvements stem from both the EPC and hybrid components. Compared with the previous V6 TDI:

Initial acceleration improves significantly, with the vehicle covering more distance in the first 2.5 seconds
Boost and torque delivery mirror the characteristics of an electric drivetrain
Overall fuel consumption and CO₂ emissions decrease through optimized combustion and electrified support

Official WLTP consumption figures vary by model but align with ~34–44 mpg (US) depending on application, based on Audi’s published unit conversions.

SUSTAINABLE FUEL COMPATIBLITY

The EA897evo4 is certified for HVO 100 (Hydrotreated Vegetable Oil) in accordance with EN 15940 standards. HVO 100 offers a 70–95% reduction in lifecycle CO₂ emissions compared to fossil diesel. The fuel is produced from waste-based feedstocks such as used cooking oils and agricultural by-products.

Audi delivers new Q5 and A6 models from Ingolstadt and Neckarsulm with HVO fuel pre-filled from the factory.

APPLICATIONS

Current models (Europe):

Audi Q5 (2025–)
Audi A6 (2025–)

As of its introduction, Audi has not announced plans for North American availability. Despite the engine’s high efficiency and long-range capability — factors well suited to U.S. driving conditions — the company has signaled no return of diesel passenger vehicles to the North American market.

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