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 engineered for refined performance and effortless cruising. Emissions compliance for its era was managed through a three‑way catalytic converter and precise lambda control, meeting Euro 2 standards across its production run.
One documented service concern is premature failure of the secondary air injection pump, which can trigger check engine lights and affect cold-start emissions. This issue, referenced in Volkswagen Service Technical Bulletin No. 01‑07‑03, is often linked to moisture ingress and electrical connector corrosion in humid climates.
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 30-valve VR6 design offers a broad, flat torque curve and a unique sound but requires strict adherence to 90,000 km timing belt replacement intervals, as failure can cause catastrophic engine damage. VW 502 00 specification oil (5W-40) is critical for maintaining hydraulic lifter quietness and preventing sludge. The secondary air injection system (SIB 01-07-03) is prone to failure in humid environments; inspect electrical connectors for corrosion during routine services. The engine's compact width allows transverse mounting but makes spark plug and coil access challenging.
Oil Specs: Requires VW 502 00 specification (Volkswagen Owner's Manual, 1998). ACEA A3/B3 or A3/B4 oils meeting this spec are suitable.
Emissions: Euro 2 certification applies to all 1997-2001 AKN engines (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under DIN 70020 standards. Output is consistent across all model applications (Volkswagen Group PT-1997).
Volkswagen Workshop Manual (Passat B5)
Volkswagen Owner's Manual (Passat B5, 1998)
Volkswagen ETKA Parts Catalogue
Volkswagen Service Technical Bulletin No. 01-07-03
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.
Locate the engine code stamped on the block, typically on the flat machined surface near the oil filter housing or on the cylinder head near the transmission flange (Volkswagen Workshop Manual). The AKN code is usually accompanied by a sequential serial number. Visual identification: Transverse V6 with a distinctive narrow-angle "VR" configuration, single intake manifold running down the center, and coil-on-plug ignition. Critical differentiation from earlier 12V and 24V VR6 engines: AKN has five valves per cylinder (three intake, two exhaust) and a different cylinder head casting. Service parts, particularly for the cylinder head and induction system, are specific to the 30V VR6 family.
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.
Find answers to most commonly asked questions about VOLKSWAGEN AKN.
Comprehensive technical documentation and regulatory references
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VOLKSWAGEN Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
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VCA Certification Portal
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