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Volkswagen ALH
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Volkswagen ALH
Verdict
SOLID · 65/100
Est. cost /3yr
€2,000-4,500 over 3 years depending on mileage and whether timing belt, EGR, and turbo actuator work is already documented at purchase
Oil interval
10,000 km
Recalls
0
Worst issue
Timing Belt Failure
CRITICAL
Volkswagen ALH
Mk4 · Mk4
Timing Belt Failure
€400-1,200
CRITICAL
VNT Turbo Actuator / Vacuum Line Failure
€150-600
HIGH
EGR Valve and Cooler Clogging / Failure
€200-700
HIGH
Valve Cover Gasket Oil Leak
€100-350
MODERATE
Volkswagen ALH
Mk4 · Mk4
•Request full service history and verify timing belt replacement date and mileage, reject any car without documented belt change within the last 80,000 km
•Scan with VCDS before purchase and check for boost, EGR, and turbo actuator fault codes
•Inspect all vacuum lines around the turbo and EGR system for cracks or brittleness
•Check for oil seepage around the valve cover and rear of the engine block
•Test drive under load above 2,000 rpm to confirm full boost and no limp mode activation
•Inspect EGR valve and cooler for excessive carbon fouling or coolant contamination
Volkswagen ALH
Mk4 · Mk4
Timing Belt, Tensioner, and Water Pump
Replace as a complete kit every 80,000-100,000 km or 4 years, whichever comes first. The ALH is an interference engine, do not delay.
80,000 km
VNT Turbo Vacuum Lines and Actuator
Inspect all vacuum lines for cracks and replace if brittle. Test actuator function at purchase.
100,000 km
EGR Valve
Clean or replace EGR valve to prevent carbon buildup causing rough running and power loss.
120,000 km
Valve Cover Assembly (Gasket Bonded)
Replace complete valve cover assembly if any oil seepage is detected.
150,000 km
Volkswagen ALH
Mk4 · Mk4
No recalls on record
Volkswagen ALH
Mk4 · Mk4
✓Proven and mechanically simple 1.9 TDI architecture with long service life when maintained
✓Garrett VNT-15 turbo is well-documented and parts are widely available
✓Large and active community (TDIClub, VW Vortex) with comprehensive DIY guides
✓Excellent fuel economy for a late-1990s engine when running correctly
✓Robust bottom end capable of high mileage with correct oil change intervals and belt discipline
Volkswagen ALH
Mk4 · Mk4
Real consumption
5.6 L/100km
Official consumption
Not available
Oil interval
10,000 km
Oil spec
VW 505.00 compliant 5W-40 fully synthetic diesel oil
Est. cost /3yr
€2,000-4,500 over 3 years depending on mileage and whether timing belt, EGR, and turbo actuator work is already documented at purchase