M271 EVO (CGI turbo) vs OM606

Side-by-side reliability comparison

Higher reliability score
OM606 BEST 96/100
+38 points over M271 EVO (CGI turbo)
0 / 100
CAUTION M271 EVO (CGI turbo) Mercedes-Benz
0 / 100
BEST OM606 Mercedes-Benz

Specifications

M271 EVO (CGI turbo)
OM606
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
CAUTION
BEST
Reliability
58
96
Years
2009--2015
1993--2001
Displacement
1796 cc
2996 cc
Layout
I4
I6
Type
Petrol Turbo
Diesel
Power
156--204 hp
134--174 hp
Known Issues
3
2
Total Risk Cost
€1,950--€5,500
€280--€700

Character

M271 EVO (CGI turbo)

"Turbo CGI successor to the Kompressor. Toothed chain fixed the stretch problem, but camshaft adjusters and tensioner wear early — Mercedes extended the adjuster warranty to 10 years in the US. Budget for the timing job."

OM606

"Legendary. 500k+ miles documented. Tunable to 500hp. One of most reliable engines ever."

Issues Comparison

M271 EVO (CGI turbo) 3

◆ CRITICAL
Camshaft adjuster and tensioner wear — timing drift, chain can jump €1,500--€4,000 50,000 km--160,000 km
● MODERATE
Camshaft sensor magnets leak oil into wiring harness and ECU €150--€800 N/A--N/A
● MODERATE
Intake-valve carbon build-up (direct injection) €300--€700 80,000 km--130,000 km

OM606 2

○ MINOR
Glow plug failure (only meaningful issue) €80--€200 80,000 km--∞
○ MINOR
Injection pump seal wear (age-related) €200--€500 200,000 km--∞

Models

M271 EVO (CGI turbo) 5

C-Class W204 2009--2014 C-Class W204 2009--2014 SLK R172 2011--2015 E-Class W212 2009--2013 C-Class W204 2009--2014

OM606 2

300D W124 1993--1997 Sedan E 300D W210 1995--2003 Sedan
Full M271 EVO (CGI turbo) Report Full OM606 Report