M271 EVO (CGI turbo) vs M112

Side-by-side reliability comparison

Higher reliability score
M112 BUY 84/100
+26 points over M271 EVO (CGI turbo)
0 / 100
CAUTION M271 EVO (CGI turbo) Mercedes-Benz
0 / 100
BUY M112 Mercedes-Benz

Specifications

M271 EVO (CGI turbo)
M112
Brand
Mercedes-Benz
Mercedes-Benz
Verdict
CAUTION
BUY
Reliability
58
84
Years
2009--2015
1997--2006
Displacement
1796 cc
3199 cc
Layout
I4
V6
Type
Petrol Turbo
Petrol Na
Power
156--204 hp
170--245 hp
Known Issues
3
7
Total Risk Cost
€1,950--€5,500
€1,280--€3,625

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."

M112

"Three-valve V6 from the last simple Mercedes era. Nothing expensive inside; the harmonic balancer rubber and the crank sensor are the two things to check. Runs for ever on synthetic oil."

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

M112 7

▲ HIGH
Harmonic balancer (crank pulley) rubber delaminates €280--€650 N/A--N/A
● MODERATE
Oil leaks — valve-cover gaskets, front crank seal (V6), rear main seal (V8) N/A--N/A N/A--N/A
● MODERATE
Air suspension / Airmatic failure (S/ML models) €600--€2,000 100,000 km--180,000 km
○ MINOR
Oil sludge from conventional oil on long FSS intervals (MY1998-2001) N/A--N/A N/A--N/A
○ MINOR
Crankshaft position sensor fails when hot — stall or hot no-start €50--€125 N/A--N/A
○ MINOR
Spark plugs + ignition coils (V6/V8) €200--€500 80,000 km--150,000 km
○ MINOR
Coolant system: water pump, thermostat, expansion tank €150--€350 100,000 km--180,000 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

M112 12

E-Class W210 1997--2002 C-Class W203 2001--2005 E-Class W211 2002--2005 E-Class W210 1997--2002 C-Class W202 1997--2000 S-Class W220 1998--2005 E-Class W210 1997--2002 C-Class W203 2001--2005 CLK W209 2002--2005 S-Class W220 1998--2005 ML 320 W163 1997--2005 SUV ML 350 W163 2003--2005 SUV
Full M271 EVO (CGI turbo) Report Full M112 Report