6.0 W12 vs 3.0 V6 TDI

Side-by-side reliability comparison

Higher reliability score
3.0 V6 TDI BUY 80/100
+38 points over 6.0 W12
0 / 100
AVOID 6.0 W12 Audi
0 / 100
BUY 3.0 V6 TDI Audi

Specifications

6.0 W12
3.0 V6 TDI
Brand
Audi
Audi
Verdict
AVOID
BUY
Reliability
42
80
Years
2003--2010
2004--2020
Displacement
5998 cc
2967 cc
Layout
V12
V6
Type
Petrol Na
Diesel
Power
450 hp
204--272 hp
Known Issues
2
3
Total Risk Cost
€3,300--€10,900
€1,800--€4,800

Character

6.0 W12

"D3 A8 W12, Phaeton. Two VR6 blocks merged. 4 timing chains. Ignition coil failures (12). Oil leaks everywhere. Coolant system complex. Beautiful engineering nightmare. Parts extinct in some markets."

3.0 V6 TDI

"Torque monster. Amazing highway economy. BiTDI = 313hp. Avoid city-only."

Issues Comparison

6.0 W12 2

◆ CRITICAL
4 timing chains + guides €3,000--€10,000 80,000 km--150,000 km
● MODERATE
Ignition coil failure (12 coils) €300--€900 40,000 km--80,000 km

3.0 V6 TDI 3

▲ HIGH
DPF blockage — city driving €600--€1,800 60,000 km--120,000 km
● MODERATE
EGR valve + cooler fouling €400--€1,000 80,000 km--150,000 km
○ MINOR
Timing chain stretch at very high mileage €800--€2,000 150,000 km--∞

Models

6.0 W12 1

A8 D3 2003--2010

3.0 V6 TDI 24

A4 B6/B7 2004--2008 Touareg 7L 2004--2010 A8 D3 2003--2010 A6 C6 2004--2011 Q7 4L 2006--2010 A5 8T 2008--2016 A4 B8 2008--2015 Q5 8R 2008--2017 A8 D4 2010--2017 A6 C7 2011--2018 A7 4G 2010--2018 A6 C7 2011--2018 Q5 8R 2013--2017 A6 C7 2011--2018 Q7 4L 2010--2015 Touareg 7P 2010--2018 A5 F5 2017--2024 A4 B9 2015--2019 A4 B9 2015--2019 Q5 FY 2019--present A7 4K 2019--present A4 B9 2019--2023 A6 C8 2019--present Q7 3.0 TDI 4M 2015--2024 SUV
Full 6.0 W12 Report Full 3.0 V6 TDI Report