2.7 Biturbo
Audi · 2.7 Biturbo V6 (AGB/AZB/ASJ)
1999–2005
"C5 S4/RS4, B5 S4. Twin K03/K04 turbos. Turbo failure common. Oil sludge if neglected. Coolant pipes. RS4 variant hugely powerful but maintenance-intensive. Specialist only."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 2
Twin turbo failure (K03/K04)
▸Boost loss, smoke, whining
Two turbos = double the failure risk. Labour-intensive replacement.
Δίδυμα turbo — €1,500-4,000. Εξειδικευμένο συνεργείο.
Oil sludge formation
▸Low oil pressure, sludge in valve cover
Same as 1.8T — extended intervals cause sludge.
Λάσπη λαδιού — αλλαγή κάθε 8-10k km.
Models with 2.7 Biturbo 2
Other Audi Engines
Tuning Potential
400hp+ Stage 1 (RS4)
Frequently Asked Questions
Is the Audi 2.7 Biturbo reliable?
The Audi 2.7 Biturbo scores 55/100 with a verdict of CAUTION. It has 2 documented issues with total repair costs between €2,000 and €6,000.
What are the common problems with the 2.7 Biturbo?
The most common issues are:
- Twin turbo failure (K03/K04) — critical, repair cost €1,500–€4,000, 80,000 km–150,000 km
- Oil sludge formation — high, repair cost €500–€2,000, 60,000 km–120,000 km
How much does it cost to repair the 2.7 Biturbo?
Total potential repair costs for all 2 known issues range from €2,000 to €6,000. The most expensive issue is typically .
What years was the 2.7 Biturbo produced?
The Audi 2.7 Biturbo was produced from 1999 to 2005. It is a 2671cc V6 petrol turbo engine.
Verdict and scores are editorial opinions based on aggregated data. Learn about our methodology. Not a substitute for professional inspection.