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Engine coolingPart report

2008 Mercury Mariner Engine cooling Problems

Complaints
6about this part
Share
1%of 461 total for the year
Median mileage
2,047miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the engine cooling of the 2008 Mercury Mariner, 1% of the 461 complaints for this model year. Where a mileage was given, the median is 2,047 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 was attempting to exit a parking lot and vehicle stalled and would not accelerate. I coasted back into a parking space, shut off engine and made a few more attempts with the same result each time. I shut vehicle off and waited for roughly twenty minutes and tried again. Vehicle did engage and I was able to exit parking structure however, vehicle stalled in the middle of the road. Fortunately, there was light traffic and I was able to coast back into parking lot. Problem was subsequently diagnosed as bad binding throttle cable. The cable was replaced at my expense. …”

NHTSA complaint #10567376, filed 2014-03, 56,631 miles

“2008 Mariner just serviced for oil change, safety, and new air filter. Not more than twelve miles, vehicle lost power on freeway. Was able to coast off highway onto off ramp. Vehicle would start, but failed to stay running. Vehicle has gas and towed to south pointe lincoln Mercury.”

NHTSA complaint #10297634, filed 2009-12, 55,099 miles

“There is an open space in the front grill measuring 30-1/2' long x 4' high x 2-1/2 ' 3-1/2' deep that is 15' from the road, which has no guard or shield to protect it from something like rocks flying off of the road. There is also another gap above this where debris can hit the A/C condenser that is 28' long x 1-1/2' high. Dealer claimed a rock flew off the road an put a hole in the A/C condenser. The vehicle only had 3,000 miles and was a couple months old. Dealer would not replace or repair condenser. Claimed it was not a covered under warranty.”

NHTSA complaint #10266510, filed 2009-04, 3,000 miles

“The contact owns a 2008 Mercury Mariner. While driving approximately 10 MPH on normal road conditions, the vehicle came to a complete stop and stalled when attempting to accelerate. The vehicle restarted after several attempts and the transmission made a loud noise. There were no warning indicators illuminating on the instrument panel. In addition, there was an excessive oil leakage coming from the gasket. The vehicle was taken to an authorized dealer on four occasions, but they could not duplicate the failure. The vehicle has not been repaired. …”

NHTSA complaint #10247136, filed 2008-10, 1,094 miles

“The contact owns a 2008 Mercury Mariner. While driving approximately 10 MPH on normal road conditions and proceeding to a stop, the engine stalled unexpectedly. The vehicle restarted after several attempts with a loud noise coming from the transmission. There were no warning indicators illuminated on the instrument panel. In addition, there was excessive oil leakage from the gasket. The vehicle was taken to an authorized dealer on four occasions, but they were unable to duplicate the failures. The vehicle has not been repaired. The contact was concerned of the safety risk involved. …”

NHTSA complaint #10247862, filed 2008-11, 1,094 miles

Related service bulletins

Engine cooling: other model years

YearComplaintsShare of year
201133%
201021%
200972%
200861%
200726%
200623%
2005812%

Other parts of the 2008 Mercury Mariner

Steering
297 complaints
Transmission and drivetrain
66 complaints
Brakes
35 complaints
Vehicle speed control
31 complaints
Electrical system
27 complaints
Other or unknown
20 complaints
Engine
14 complaints
Fuel system
10 complaints
Air bags
8 complaints
Electronic stability control
5 complaints
Body and structure
5 complaints
Suspension
5 complaints

← All problems reported for the 2008 Mercury Mariner

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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