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Mitsubishi 4G63
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Mitsubishi 4G63
Verdict
SOLID · 64/100
Est. cost /3yr
€5,000-12,000 over 3 years depending on modification level, maintenance history, and whether drivetrain rebuilds are required
Oil interval
5,000 km
Recalls
0
Worst issue
Narrow Rod Bearing Failure
CRITICAL
Mitsubishi 4G63
CP9A · Evo VI
Narrow Rod Bearing Failure
€1,500-4,500
CRITICAL
Water Pump Failure
€300-700
HIGH
Cylinder Wall Scoring on High-Mileage or Overbored Engines
€800-3,000
HIGH
Transmission Gear Wear (3rd and 4th Gear)
€600-2,000
MODERATE
Oil Pump Wear
€200-600
MODERATE
Oil Consumption and Valve Cover / Rear Main Seal Leaks
€200-800
MODERATE
Mitsubishi 4G63
CP9A · Evo VI
Perform a cold-start listen for rod knock or bottom-end rattle before the engine warms up
Pull spark plugs and inspect plug wells for oil contamination indicating valve cover or rear main seal leaks
Request full service history and confirm oil changes were done at 5,000 km or less with quality synthetic oil
Conduct compression and leakdown tests on all four cylinders to rule out cylinder wall scoring or ring wear
Test drive and engage every gear including 3rd and 4th under load to detect gearbox clatter or slipping
Ask for evidence of timing belt and water pump replacement history, treat unknown service history as overdue
Ask directly whether the engine has been opened, rebuilt, or bored, and if so whether rod bearings and cylinder walls were addressed
Mitsubishi 4G63
CP9A · Evo VI
Rod Bearings
Inspect and replace with upgraded bearings at any engine-open opportunity; do not defer on high-mileage or modified examples
80,000 km or at first engine open
Water Pump
Replace at every timing belt service interval without exception
100,000 km or every timing belt change
Oil Pump
Replace during engine rebuild or if low oil pressure symptoms appear
120,000-150,000 km
Valve Cover Gasket and Rear Main Seal
Inspect and replace if any weeping or oil consumption is detected
100,000 km
Transmission (3rd/4th gear synchros)
Test all gears before purchase; budget for rebuild or replacement on high-mileage units
120,000-180,000 km
Mitsubishi 4G63
CP9A · Evo VI
No recalls on record
Mitsubishi 4G63
CP9A · Evo VI
Factory main cap girdle gives exceptional bottom-end strength for a production engine
Proven to handle 1,000+ HP with supporting upgrades, with extraordinary aftermarket support
Long production run across DSM and Evo platforms means parts availability is excellent globally
Deep community knowledge base with detailed DIY rebuild and diagnostic guides
Responds well to consistent maintenance, a well-kept stock 4G63 is genuinely durable
Mitsubishi 4G63
CP9A · Evo VI
Real consumption
13 L/100km
Official consumption
Not available
Oil interval
5,000 km
Oil spec
5W-40 full synthetic, community-recommended for turbocharged 4G63 Evo applications
Est. cost /3yr
€5,000-12,000 over 3 years depending on modification level, maintenance history, and whether drivetrain rebuilds are required