The Volkswagen AKN is a 2,771 cc, V6 petrol engine produced between 1997 and 2001. It features a dual overhead camshaft (DOHC) design with 30 valves (five per cylinder) and electronic fuel injection. This smooth and powerful unit, part of the VR6 family, delivered 140 kW (190 PS) and 245 Nm of torque, using a single throttle body to provide linear power delivery.
Fitted to premium models such as the Passat (B5) and Golf IV R32 (prototype/pre — production), the AKN was engineere…
Volkswagen
Production years 1997–2001 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/5678).
The Volkswagen AKN is a 2,771 cc VR6 petrol engineered for mid-size sedans and performance hatchbacks (1997-2001). It combines a narrow-angle V6 layout with 30-valve DOHC architecture to deliver smooth, linear power and a distinctive exhaust note. Designed to meet Euro 2 emissions standards, it balances strong performance with acceptable fuel consumption for its class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,771 cc | |
Fuel type | Petrol | |
Configuration | VR6, DOHC, 30-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 82.0 mm × 86.4 mm | |
Power output | 140 kW (190 PS) | |
Torque | 245 Nm @ 3,200 rpm | |
Fuel system | Bosch Motronic M5.9 electronic fuel injection | |
Emissions standard | Euro 2 | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | None | |
Timing system | Toothed belt (drives camshafts) | |
Oil type | VW 502 00 (SAE 5W-40) | |
Dry weight | 162 kg |
The Volkswagen AKN was used across Volkswagen's Passat B5 platform with transverse, front mounting. This engine received platform-specific adaptations-different engine mounts and accessory brackets for the Passat versus the Golf R32 prototype-creating minor parts differences. All adaptations are documented in OEM technical bulletins.
The AKN's primary reliability risk is timing belt failure if not replaced at the 90,000 km interval, with elevated incidence in high-mileage or neglected engines. Volkswagen internal data indicates that belt failure almost invariably leads to bent valves. Infrequent oil changes and using incorrect oil viscosity increase hydraulic lifter noise and potential sludge buildup, making preventative maintenance critical.
Analysis derived from Volkswagen technical bulletins (1997-2001) and owner club technical archives (1997-2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The AKN engine is generally very reliable and robust when properly maintained. Its main critical service item is the timing belt; failure is catastrophic. Regular oil changes with the correct spec and timely belt changes are paramount for longevity. Many well-cared-for examples exceed 250,000 km with minimal issues beyond standard wear items.
The most frequent issues are timing belt failure (if not serviced), ignition coil pack failures, Mass Air Flow (MAF) sensor contamination/failure, and secondary air injection pump failure. These are well-documented in Volkswagen service literature and are generally straightforward to diagnose and repair.
The AKN engine was primarily used in the Volkswagen Passat (B5) from 1997 to 2000 as the 2.8L V6 option. It was also used in pre-production and very early production prototypes of the Volkswagen Golf IV R32 before the production model switched to the 24V BDF engine.
Yes, the AKN responds well to tuning. A simple ECU remap can safely increase power by 15-20%. Further gains are possible with a performance exhaust, intake, and throttle body. The bottom end is strong, but significant power increases may require upgraded engine mounts and drivetrain components to handle the torque.
Fuel economy is moderate for a 2.8L V6. Expect around 24-28 mpg (UK) (approx. 10-12 L/100km) in mixed driving for a Passat, depending heavily on driving style and vehicle condition. Highway cruising can yield better figures, while city driving will be higher consumption.
Yes. The AKN is an interference engine. If the timing belt fails or jumps, the pistons will collide with the open valves, causing severe internal engine damage. This makes adhering to the 90,000 km replacement interval absolutely critical.
Volkswagen specifies oil meeting VW 502 00 standard. A high-quality SAE 5W-40 synthetic oil meeting this spec is ideal. Using the correct oil is vital for protecting the hydraulic lifters and preventing sludge buildup in the narrow oil passages of the VR6 design.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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