This is a service newsletter (Tech Talk) that was sent out to dealers.
full bulletin at NHTSA ↗2007 Mitsubishi Galant engine problems
moderate 4 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
4
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 4 engine complaints filed for the 2007 Mitsubishi Galant, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA engine complaint has been filed on this vehicle in over 10 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This is a service newsletter (Tech Talk) that was sent out to dealers.
full bulletin at NHTSA ↗Due to variations in production, certain exhaust manifold mounted catalytic converters may experience catalyst layer separation on affected vehicles. If this occurs, the MIL will illuminate with DTC P0421 or P0431, "Warm Up Catalyst Efficiency Below Threshold" stored in the PCM. Mitsubishi Motors North America, Inc. is extending the catalytic converter warranty only on affected vehicles currently registered in certain states from 8 years / 80,000 miles to 10 years / 120,000 miles.
full bulletin at NHTSA ↗MITSUBISHI: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. CERTAIN EXHAUST MANIFOLD MOUNTED CATALYTIC CONVERTERS WILL EXPERIENCE CATALYST LAYER SEPARATION DUE TO PRODUCTION VARIATIONS AND WILL CAUSE MALFUNCTION INDICATOR LAMP (MIL) TO ILLUMINATE. MODEL 2006-2008 GALANT, ECLIPSE, ECLIPSE SPYDER.
full bulletin at NHTSA ↗This is a service newsletter (Tech Talk) that was sent out to dealers.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 3 most recent
Tl* the contact owns a 2007 Mitsubishi galant. The contact stated that while driving approximately 10-15 MPH, the engine stalled. The vehicle was towed several times to the dealer, but was not diagnosed or repaired. The manufacturer was notified of the failure. The approximate failure mileage was 88,000.
On may 26, 2016 while traveling about 50 MPH going up a straight stretch of highway I heard loud banging coming from the engine compartment, then quiet for a second then more loud clanging. I immediately released the accelerator. My battery light immediately came on. I stepped on my brake but had to step hard to get it to slow my car. I approached a curve and had to really muscle the car around…
My check engine light was on; so the mechanic replaced the EGR valve w/gassket. I have driven my car about 500 miles and it still does not pass the smog test. The oxygen sensor is not ready. I've been told that I need to drive the car more.
Had engine trouble with your 2007 Mitsubishi Galant?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2007 Mitsubishi Galant?
It's a documented issue but not catastrophic. 4 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Based on the 4 complaints filed, engine issues most often appear around 82,338 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/Mitsubishi/Galant.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.