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Engine coolingPart report

2003 Mitsubishi Lancer Evolution Engine cooling Problems

Complaints
10about this part
Share
10%of 98 total for the year
Median mileage
15,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 10 complaints about the engine cooling of the 2003 Mitsubishi Lancer Evolution, 10% of the 98 complaints for this model year. Where a mileage was given, the median is 15,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I took the car in for regular service. I let them know it was making an odd rattle type noise. I was told it was nothing to be concerned with. A couple of weeks later the engine failed. It was in the shop for two weeks. The car had less than 5000 miles on it at the time. They rebuilt the engine.”

NHTSA complaint #10095787, filed 2004-10, 4,781 miles

“Engine light went off. P0300 code. I've went back to the dealers for more than 3 times for this very same code. They've done a ecu reflash for me and they swapped the fuel injectors as well. The engine light still went off very often with the same p0300 code.”

NHTSA complaint #10105945, filed 2005-01, 2,000 miles

“I own a 2003 Mitsubishi Lancer Evolution that was purchased brand new from the dealership in the middle of 2003. The car had run fine until about may 12th of this year. The car started performing oddly. The turbo and engine would not provide full power at random times while driving. I was informed by mechanics that it could possibly be a vacuum line leak or hose leak. Acting on their advice, I purchased from the dealership replacement factory vacuum hoses and replaced them on the car. This did not fix the problem. …”

NHTSA complaint #10125388, filed 2005-06, 34,200 miles

“1. This car is completely stock and driven by an adult who does not race or abuse any of the cars mechanical systems. 2. The issue I have is with a obd-ii 'engine warning' code cell 0300 I repeatedly get while driving on the freeway. I experience this warning up to 5 times a day during my 20 mile freeway commute. The cel warning comes on most often during very light acceleration inputs (5-15% throttle) while attempting to maintain speed with the other traffic on the road. While gently touching the throttle, there is a sudden and violent engine misfiring that slows the car down considerably. …”

NHTSA complaint #10078606, filed 2004-06, 19,000 miles

“Random p0300 error plus vibration at 2800 to 3500 RPM. Contacted Mitsubishi and it is a known issue with a TSB for all evo viii vehicles due to a faulty input shaft. However, Mitsubishi does not cover this under warranty for 03 models as it would be out of warranty long before this issue shows up. Problem occurs sporadically and causes sudden loss of vehicle power. In an oncoming passing situation, this power loss could seriously degrade vehicle safety. …”

NHTSA complaint #10453742, filed 2012-04, 60,000 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
2010311%
200813%
20061042%
200517%
20031010%

Other parts of the 2003 Mitsubishi Lancer Evolution

Transmission and drivetrain
65 complaints
Electrical system
9 complaints
Body and structure
8 complaints
Exterior lighting
3 complaints
Fuel system
3 complaints
Visibility (wipers, defrost, mirrors)
3 complaints
Other or unknown
2 complaints
Brakes
1 complaints
Equipment
1 complaints
Interior lighting
1 complaints
Steering
1 complaints
Suspension
1 complaints

← All problems reported for the 2003 Mitsubishi Lancer Evolution

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology