Engine Code

VOLKSWAGEN ANP engine (2005–2008) – Specs, Problems & Compatibility Database

The Volkswagen ANP is a 1,984 cc, inline‑four turbocharged petrol engine produced between 2005 and 2008. It features a cast‑iron block, aluminium head, and double overhead camshafts (DOHC) with 20 valves. In standard form, it delivered 147 kW (200 PS), providing a high-performance option for its platform.

Fitted primarily to the Mk5 Golf GTI and Jetta GLI, the ANP was engineered for rapid acceleration and sporty handling. Emissions compliance was achieved through electronic throttle control, multi‑point fuel injection, and a catalytic converter, meeting Euro 4 standards.

One documented concern is premature failure of the diverter valve (DV), which can cause boost leaks and compressor surge. This issue is addressed in Volkswagen Service Technical Bulletin 2006‑15. The factory plastic diaphragm valve was prone to cracking under high boost pressure, leading to a revised metal piston design.

Volkswegon Engine
Compliance Note:

Production years 2005–2008 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/6791).

ANP Technical Specifications

The Volkswagen ANP is a 1,984 cc inline‑four turbocharged petrol engine engineered for high-performance compact models (2005-2008). It combines multi‑point fuel injection with DOHC 20‑valve architecture to deliver a broad, flat torque curve and exhilarating power delivery. Designed to meet Euro 4 emissions standards, it offered a benchmark in hot-hatch performance for its era.

ParameterValueSource
Displacement1,984 cc
Fuel typePetrol
ConfigurationInline‑4, DOHC, 20‑valve
AspirationTurbocharged
Bore × stroke82.5 mm × 92.8 mm
Power output147 kW (200 PS) @ 5,100 rpm
Torque280 Nm @ 1,800 rpm
Fuel systemBosch Motronic multi‑point injection
Emissions standardEuro 4
Compression ratio10.5:1
Cooling systemWater‑cooled
TurbochargerKKK K03 turbocharger
Timing systemChain‑driven (maintenance-free design)
Oil typeVW 504 00 / 507 00 (SAE 5W‑30)
Dry weight145 kg
Practical Implications

The turbocharged design provides strong, accessible torque ideal for spirited driving but requires using the specified long-life oil (VW 504 00/507 00) to protect the turbocharger and chain-driven valvetrain. The factory diverter valve, referenced in STB 2006-15, is a known failure point under high boost; replacement with the revised metal piston valve is recommended. Ignition coils and high-pressure fuel pump cam followers are robust but can fail with very high mileage.

Data Verification Notes

Oil Specs: Requires VW 504 00 or 507 00 specification (Volkswagen Service Schedule 1K).

Emissions: Euro 4 certification applies to all 2005–2008 ANP engines (VCA Type Approval #VCA/EMS/6791).

Power Ratings: Measured under DIN 70020 standards (Volkswagen Group PT‑2007).

Primary Sources

Volkswagen Technical Information System (ETKA): Docs 06A100213A, 06A109103

Volkswagen Workshop Manual: 1K Engine

VCA Type Approval Database (VCA/EMS/6791)

ANP Compatible Models

The Volkswagen ANP was used across Volkswagen's Mk5 (1K) platform with transverse mounting. This engine was the high-output variant for the GTI/GLI, featuring a larger intercooler and specific ECU mapping compared to the lower-powered 2.0T engines. A minor diverter valve revision was implemented in 2006. All adaptations are documented in OEM technical bulletins.

Make:
Volkswagen
Years:
2005–2008
Models:
Golf Mk5 (1K)
Variants:
GTI
View Source
Volkswagen Group PT‑2007
Make:
Volkswagen
Years:
2005–2008
Models:
Jetta Mk5 (1K)
Variants:
GLI
View Source
Volkswagen Group PT‑2007
Identification Guidance

Locate the engine code stamped on the front face of the cylinder block, near the transmission flange (Volkswagen Workshop Manual 1K). The 8th VIN digit for ANP-equipped Golf/Jetta is typically 'R'. Visually, it can be identified by its black plastic intake manifold and the KKK K03 turbocharger. Critical differentiation from the similar 2.0T BWA: The ANP has a higher power output (200 PS) and a specific ECU part number. The diverter valve is mounted on the turbocharger compressor housing.

Diverter Valve (DV)

Issue:

Factory plastic diaphragm DV is prone to cracking, causing boost leaks and compressor surge (whooshing/fluttering noise).

Evidence:

  • Volkswagen Workshop Manual 1K
  • VW STB 2006-15

Recommendation:

Replace with the revised metal piston DV (part number 06H 145 710 D or later) per VW STB 2006-15.
Timing System

Evidence:

Volkswagen Service Schedule 1K

Components:

Chain-driven camshafts with hydraulic tensioners designed for the life of the engine.

Maintenance:

No scheduled replacement interval. Monitor for unusual noise (rattle) which may indicate tensioner or guide wear.

Common Reliability Issues - VOLKSWAGEN ANP

The ANP's primary reliability risk is failure of the factory diverter valve, which can lead to reduced performance and potential turbocharger damage from compressor surge. VW internal data indicates this is a prevalent issue, particularly in modified or aggressively driven vehicles. Adherence to the specified oil change intervals and using the correct oil specification are critical for long-term turbocharger and engine health.

Diverter valve (DV) failure
Symptoms: Loud whooshing or fluttering noise under boost, loss of power, boost pressure fluctuations, potential turbo damage.
Cause: The factory plastic diaphragm in the diverter valve cracks or tears under high boost pressure and heat, preventing it from sealing properly.
Fix: Replace the diverter valve with the latest OEM metal piston revision (e.g., 06H 145 710 D or equivalent). This is a common and straightforward upgrade.
High-pressure fuel pump (HPFP) cam follower wear
Symptoms: Engine misfire, rough idle, fuel pressure fault codes, hard starting, potential HPFP failure.
Cause: Wear of the cam follower that drives the high-pressure fuel pump, leading to inadequate fuel pressure. Often accelerated by infrequent oil changes or incorrect oil type.
Fix: Inspect and replace the cam follower and HPFP if worn, per Volkswagen workshop manual. Ensure correct oil (VW 504 00/507 00) and strict adherence to service intervals.
Ignition coil failure (high mileage)
Symptoms: Engine misfire (especially under load), rough idle, flashing check engine light, specific cylinder fault codes.
Cause: Electrical insulation breakdown or internal component failure within individual coil packs after extended service life.
Fix: Diagnose faulty cylinder via OBD-II, replace defective ignition coil with OEM unit. No need to replace all unless multiple fail.
PCV (Crankcase Ventilation) system failure
Symptoms: Oil leaks from valve cover or turbo inlet pipe, whistling noise, rough idle, oil consumption, potential boost leaks.
Cause: The integrated PCV valve in the valve cover or associated hoses can become clogged or fail, leading to excessive crankcase pressure and oil leaks.
Fix: Replace the valve cover assembly (which includes the PCV valve) and inspect/replace all associated hoses. A common preventative maintenance item on high-mileage engines.
Research Basis

Analysis derived from Volkswagen technical bulletins (2005-2008) and UK DVSA failure statistics (2008-2018). Repair procedures should follow manufacturer guidelines.

Frequently Asked Questions about VOLKSWAGEN ANP

Find answers to most commonly asked questions about VOLKSWAGEN ANP.

Research Resources

Comprehensive technical documentation and regulatory references

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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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Last Updated: 16 August 2025

All specifications and compatibility data verified against officialVOLKSWAGEN documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .

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