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Mitsubishi 4B11
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Mitsubishi 4B11
Verdict
RISKY · 52/100
Est. cost /3yr
€3,500-9,000 over 3 years depending on modification level, driving style, and whether deferred maintenance requires catch-up work
Oil interval
5,000 km
Recalls
3
Worst issue
Open/Semi-Open Deck Block Weakness Under High Boost
CRITICAL
Mitsubishi 4B11
CZ4A · Evo X
Open/Semi-Open Deck Block Weakness Under High Boost
€2,000-6,000
CRITICAL
Timing Chain Stretch and Wear
€600-1,500
HIGH
Compressor Bearing Noise / Turbocharger Wear
€800-2,500
HIGH
Diesel-Like Cold Start Knock (Normal Characteristic)
€0-200
MODERATE
Takata Airbag Inflator Recall (Unfixed Units)
€0-0
MODERATE
Electrical System Drain — Headlights and Cooling Fan Not Shutting Off
€100-500
LOW
Mitsubishi 4B11
CZ4A · Evo X
•Verify Takata airbag recall completion via NHTSA VIN lookup before finalizing any purchase
•Cold-start the engine fully from cold and listen for timing chain rattle, and distinguish normal diesel-like knock from serious mechanical noise
•Perform a compression and leakdown test on all four cylinders to check for head gasket issues related to the open-deck block
•Inspect the turbocharger for shaft play and check intercooler piping interior for oil contamination indicating seal failure
•Check for any signs of battery drain, confirm headlights and cooling fans switch off properly after ignition is removed
•Request full service history with evidence of 5,000 km or shorter oil change intervals using full synthetic oil appropriate for turbocharged use
•Ask if the car has been remapped or modified for higher boost, and if so, request evidence of forged internals or a documented tune history, since stock internals are not rated for sustained high-boost use
Mitsubishi 4B11
CZ4A · Evo X
Timing Chain and Tensioner
Inspect at 100,000 km, replace chain, tensioner, and guides if any slack or rattle present
100,000
Turbocharger
Check shaft play and inspect for oil leaks; replace or rebuild if play exceeds spec
120,000
Takata Passenger Airbag Inflator
Verify NHTSA recall completion via VIN, if not done, refuse purchase or insist on dealer repair before sale
0
Coolant System / Head Gasket
Full coolant flush and pressure test; check for combustion gas intrusion into coolant, especially on modified cars
80,000
Mitsubishi 4B11
CZ4A · Evo X
Frontal Passenger Airbag Inflator Module (Takata)
Inflator may rupture on deployment, sending metal fragments toward occupants, potentially fatal
Front Suspension Lower Control Arm
Lower control arm may crack or fracture, leading to loss of vehicle control
Aftermarket Exterior Lighting / Headlight Assemblies
Aftermarket combination corner and bumper lamp assemblies may not meet FMVSS standards, reducing visibility
Mitsubishi 4B11
CZ4A · Evo X
✓Timing chain instead of belt, no scheduled belt replacement required
✓All-alloy construction keeps weight reasonable for a turbocharged four
✓Strong performance platform with well-developed aftermarket support
✓GEMA-based design shared with multiple manufacturers means parts availability is relatively broad
✓Stock internals and stock boost levels handle daily driving reliably when properly maintained
Mitsubishi 4B11
CZ4A · Evo X
Real consumption
12.4 L/100km
Official consumption
Not available
Oil interval
5,000 km
Oil spec
5W-30 or 5W-40 full synthetic, API SN or better, 5,000 km community-recommended interval given turbo heat cycles
Est. cost /3yr
€3,500-9,000 over 3 years depending on modification level, driving style, and whether deferred maintenance requires catch-up work
Mitsubishi 4B11
CZ4A · Evo X
280 hp · 422 Nm
2007-2015
291 hp · 407 Nm
2008-2015
313 hp · 422 Nm
2015-2016
405 hp · 480 Nm
2008-2015
Do not judge a used Evo X purely by its claimed hp figure. A stock 280-291hp JDM or US car on unmodified internals is the lowest-risk buy for long-term reliability. Higher factory outputs like the Final Edition or genuine FQ-400 are only as safe as their documented hardware, the FQ-400 in particular carries forged internals and a bigger turbo specifically because the stock block cannot reliably sustain that power. If you find a car claiming FQ-400-level output or an aftermarket remap near or above 350whp without paperwork showing forged pistons and supporting hardware, treat it as a high-risk purchase regardless of how it drives on a test drive.