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Audi AEB
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Audi AEB
Verdict
SOLID · 62/100
Est. cost /3yr
€1,800-6,000 over 3 years depending on mileage, modification level, and whether coolant system and turbo work have already been addressed
Oil interval
7,500 km
Recalls
0
Worst issue
Rear Coolant Flange Leak
HIGH
Audi AEB
B5/B6 · B5/B6
Rear Coolant Flange Leak
€150-600
HIGH
Turbocharger Failure / Compressor Wheel Damage
€500-1,800
HIGH
General Coolant System Leaks (Hoses, Flange Plugs, Water Pump)
€100-500
MODERATE
Worn or Damaged OEM Fuel Injectors
€200-600
MODERATE
Audi AEB
B5/B6 · B5/B6
•Remove the splash guard and inspect the rear coolant flange and metal coolant pipe for cracks, staining, or active leaks before any purchase
•Check the turbocharger shaft for radial play by hand and inspect compressor wheel fins through the intake for any chipping or damage
•Pressure-test the entire cooling system to identify any slow leaks from hoses, flange plugs, or the water pump
•Connect a VCDS or OBD2 scan tool and check for fault codes, especially boost, fuelling, and misfire-related codes
•Verify timing belt service history, if unknown or overdue beyond 60,000 km or 4 years, budget for immediate replacement including water pump and tensioners
•Check oil filler cap and dipstick for white mayonnaise-like emulsion indicating head gasket issues or coolant ingress
•Ask whether the car has been tuned (chip, injectors, turbo), and if so request logs showing boost and fuel trims are within safe range
Audi AEB
B5/B6 · B5/B6
Rear coolant flange and pipe assembly
Inspect and replace flange, pipe, and associated seals proactively
80,000 km or at purchase
Turbocharger
Check for shaft play and oil feed condition; replace if any play detected
100,000 km
Timing belt, water pump, tensioner, and idler kit
Replace as a complete kit, water pump failure can destroy the engine
60,000 km or every 4 years
Coolant hoses and radiator cap
Replace all aged rubber coolant hoses and pressure-test system
100,000 km
Audi AEB
B5/B6 · B5/B6
No recalls on record
Audi AEB
B5/B6 · B5/B6
✓AEB cylinder head features larger ports than later variants, making it highly sought after for performance builds
✓Forged steel OEM crankshaft provides a strong foundation for tuning and high-mileage durability
✓Large aftermarket and tuning community with extensive parts availability
✓Platform well understood by independent specialists globally
✓Proven 1.8T block with good power potential when properly maintained
Audi AEB
B5/B6 · B5/B6
Real consumption
9 L/100km
Official consumption
Not available
Oil interval
7,500 km
Oil spec
VW 502 00 compliant 5W-40 fully synthetic (e.g. Castrol SLX Professional 5W-40 or equivalent)
Est. cost /3yr
€1,800-6,000 over 3 years depending on mileage, modification level, and whether coolant system and turbo work have already been addressed