W8 4.0 vs 1.9 TDI (ALH)

Side-by-side reliability comparison

Higher reliability score
1.9 TDI (ALH) BEST 92/100
+57 points over W8 4.0
0 / 100
AVOID W8 4.0 Volkswagen
0 / 100
BEST 1.9 TDI (ALH) Volkswagen

Specifications

W8 4.0
1.9 TDI (ALH)
Brand
Volkswagen
Volkswagen
Verdict
AVOID
BEST
Reliability
35
92
Years
2001--2004
1996--2006
Displacement
3999 cc
1896 cc
Layout
W8
I4
Type
Petrol Na
Diesel
Power
275 hp
90 hp
Known Issues
1
3
Total Risk Cost
€3,000--€10,000
€1,150--€2,900

Character

W8 4.0

"Passat W8. Two VR4 blocks merged. Most complex VW ever. 4 timing chains. Ignition coils. Oil leaks. Cooling system. Near-impossible to find parts. Beautiful concept, terrible ownership."

1.9 TDI (ALH)

"The legendary ALH. 500k+ miles documented. Simple mechanical injection. Nearly unkillable. Belt-driven."

Issues Comparison

W8 4.0 1

◆ CRITICAL
4 timing chains + complexity €3,000--€10,000 60,000 km--120,000 km

1.9 TDI (ALH) 3

▲ HIGH
Timing belt replacement — interference engine €250--€500 60,000 km--90,000 km
○ MINOR
Injection pump wear (very high mileage) €400--€1,200 250,000 km--∞
○ MINOR
Turbo wear at very high mileage €500--€1,200 200,000 km--∞

Models

W8 4.0 1

Passat B5 (3B) 2001--2004

1.9 TDI (ALH) 2

Golf 1.9 TDI MK4 1997--2004 Hatchback Polo 1.9 TDI 9N 2001--2009 Hatchback
Full W8 4.0 Report Full 1.9 TDI (ALH) Report