4.2 V8 40V (ARS/ASG/AQJ/ANK/BAS/BAT/BBK) vs EA837 3.0T SC

Side-by-side reliability comparison

Higher reliability score
EA837 3.0T SC BUY 82/100
+22 points over 4.2 V8 40V (ARS/ASG/AQJ/ANK/BAS/BAT/BBK)
0 / 100
CAUTION 4.2 V8 40V (ARS/ASG/AQJ/ANK/BAS/BAT/BBK) Audi
0 / 100
BUY EA837 3.0T SC Audi

Specifications

4.2 V8 40V (ARS/ASG/AQJ/ANK/BAS/BAT/BBK)
EA837 3.0T SC
Brand
Audi
Audi
Verdict
CAUTION
BUY
Reliability
60
82
Years
1999--2009
2008--2017
Displacement
4163 cc
2995 cc
Layout
V8
V6
Type
Petrol Na
Petrol Supercharged
Power
299--344 hp
272--354 hp
Known Issues
1
3
Total Risk Cost
€1,380--€3,220
€1,000--€2,200

Character

4.2 V8 40V (ARS/ASG/AQJ/ANK/BAS/BAT/BBK)

"The 40-valve port-injection 4.2 V8 of the S4 B6/B7, S6 C5 and A6 4.2. Glorious sound, but the plastic guides and tensioners of the rear-mounted timing chains break up with age and heat - an engine-out job, and if the chain jumps a tooth the valves meet the pistons. Listen to a cold start and look for proof of the chain job."

EA837 3.0T SC

"Most reliable S-model Audi ever. Supercharged = instant. Known issues cheap. 200k+ km."

Issues Comparison

4.2 V8 40V (ARS/ASG/AQJ/ANK/BAS/BAT/BBK) 1

◆ CRITICAL
Plastic timing-chain guides and tensioner break up - engine-out repair €1,380--€3,220 97,000 km--161,000 km

EA837 3.0T SC 3

● MODERATE
PCV (crankcase ventilation) valve failure €200--€500 60,000 km--130,000 km
● MODERATE
Thermostat housing failure €300--€700 60,000 km--130,000 km
● MODERATE
Water pump failure €500--€1,000 80,000 km--150,000 km

Models

4.2 V8 40V (ARS/ASG/AQJ/ANK/BAS/BAT/BBK) 2

A6 C5 2003--2003 A6 C5 2003--2005

EA837 3.0T SC 12

A4 B8 2009--2015 A5 8T 2009--2016 Q5 8R 2013--2017 Touareg 7P 2012--2018 A8 D4 2010--2017 A6 C6 2008--2011 A7 4G 2010--2018 A6 C7 2011--2018 Q7 4M 2015--present Q5 8R 2012--2017 Cayenne 92A (E2) 2015--2017 Panamera 970 2014--2016
Full 4.2 V8 40V (ARS/ASG/AQJ/ANK/BAS/BAT/BBK) Report Full EA837 3.0T SC Report