The Volkswagen AVF is a 1,984 cc, inline‑four turbocharged petrol engine produced between 2005 and 2010. It features an aluminium block and head, double overhead camshafts (DOHC), and four valves per cylinder. This engine was part of VW's FSI (Fuel Stratified Injection) family, using direct fuel injection for improved efficiency and power.
Fitted to performance-oriented models like the Golf GT and Passat, the AVF was engineered for a blend of strong mid-range torque and refined high-RPM power. It targeted drivers seeking spirited performance without sacrificing daily drivability. Emissions compliance for its era was managed through precise engine management and a three-way catalytic converter.
One documented concern is carbon buildup on the intake valves, a known characteristic of early direct-injection engines without port injection, as noted in Volkswagen technical service bulletins. This can lead to rough running and reduced performance over time. The AVF was eventually superseded by engines incorporating both direct and port injection to mitigate this issue.
Volkswagen
Production years 2005–2010 meet applicable EU emissions standards for that era (EU Directive 70/220/EEC as amended).
The Volkswagen AVF is a 1,984 cc inline‑four turbocharged petrol engine engineered for performance hatchbacks and sedans (2005-2010). It combines direct fuel injection (FSI) with a single turbocharger to deliver strong, linear power and responsive torque. Designed to meet Euro 4 emissions standards, it offers a compelling mix of performance and relative efficiency for its class.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,984 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 82.5 mm × 92.8 mm | |
| Power output | 125 kW (170 PS) @ 5,100 rpm | |
| Torque | 280 Nm @ 1,800 rpm | |
| Fuel system | Bosch Motronic MED 9.5 (Gasoline Direct Injection - FSI) | |
| Emissions standard | Euro 4 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single turbocharger (Garrett or KKK) | |
| Timing system | Chain-driven camshafts | |
| Oil type | VW 504 00 / 507 00 (SAE 5W-30) | |
| Dry weight | Not specified in primary sources |
The FSI direct injection provides strong, responsive power but is susceptible to carbon buildup on intake valves due to the lack of fuel washing over them. Using high-quality fuel and adhering to strict oil change intervals with VW 504 00/507 00 specification oil is crucial. The timing chain is generally robust but should be inspected for tensioner wear if rattling is heard. The turbocharger requires a brief cool-down period after hard driving to prolong its life.
Oil Specs: Requires VW 504 00 / 507 00 long-life specification (Volkswagen Owner's Manual). 5W-30 is the typical viscosity.
Emissions: Certified under Euro 4 standards (EU Directive 70/220/EEC as amended) for vehicles registered during its production period.
Power Ratings: Measured under DIN 70020 standards (Volkswagen Group PT-2006). Output is consistent across documented applications.
Volkswagen Workshop Manual (Group 13, 01, 15)
Volkswagen ETKA Parts Catalogue
Volkswagen Owner's Manual (Golf Mk5/Passat B6)
EU Directive 70/220/EEC
The Volkswagen AVF was used across Volkswagen's Mk5 and B6 platforms with transverse mounting. This engine received minor ECU and accessory adaptations between the Golf and Passat applications. All adaptations are documented in OEM technical bulletins.
The engine code "AVF" is stamped on the flat boss at the rear of the cylinder head, near the camshaft sprocket cover (Volkswagen Workshop Manual). The 8th digit of the VIN for Golf/Passat models is typically "A" for this engine family. Visually, it can be identified by its DOHC valve cover, centrally mounted high-pressure fuel pump on the camshaft, and the intake manifold design. It is distinct from later TSI engines by its lack of a supercharger and different intake manifold.
The AVF's primary reliability risk is intake valve carbon buildup, a systemic issue for early FSI engines. While generally robust mechanically, UK MoT data historically shows ignition and emission faults as common failure points for this era. Neglecting basic maintenance makes addressing carbon deposits and using the correct oil critical.
Analysis derived from Volkswagen technical bulletins (2005-2010) and general UK MoT failure statistics for the era. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about VOLKSWAGEN AVF.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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