2010 Mercury Mariner Engine Problems
NHTSA lists 104 engine complaints for the 2010 Mercury Mariner, 39% of all complaints filed for that model year, the highest share among the years shown. Owners commonly report sudden power loss and stalling tied to the throttle body, at a median 51,500 miles. No related recall is listed for this issue.
- Engine complaints
- 104
- 39% of 270 complaints
- All complaints this year
- 270
- Crashes reported
- 1
- Fires reported
- 1
- Injuries reported
- 4
- Median mileage
- 51,500 mi
- Related recalls
- 0
Typical engine symptoms owners report
- Engine suddenly loses power and becomes unresponsive to the accelerator while driving, often at highway speed.
- Vehicle stalls without warning, sometimes restarting on its own and sometimes requiring a tow.
- Check engine or powertrain warning light illuminates at the same time as the power loss or stall.
- Dealers frequently trace the problem to a throttle body defect, in some cases without a completed repair.
- Rough running, surging, or an inability to accelerate past a low speed occurs after the stall event.
- One case reports hesitation and cruise control surging after a transmission software update.
When 2010 Mercury Mariner engine complaints were filed
First complaint Aug 5, 2012, latest Sep 8, 2025.
Engine recalls for the 2010 Mercury Mariner
No safety recalls on record for this model year.
Engine complaints by Mariner model year
Raw complaint counts per model year; newer years have had less time to accumulate complaints.
Frequently asked questions
- How common are engine problems on the 2010 Mercury Mariner?
- NHTSA lists 104 engine complaints for the 2010 model year, which is 39% of all 270 complaints filed for that year, the highest share among the years listed.
- Is there a recall for the 2010 Mercury Mariner engine issue?
- No related recall is listed in NHTSA data for this engine problem area.
- At what mileage do these engine problems usually show up?
- The median mileage at failure for engine complaints on the 2010 Mariner is 51,500 miles.
- What do owners describe happening with the engine?
- Owners describe sudden loss of power, stalling, and rough running, often linked by dealers to a throttle body defect, sometimes accompanied by a check engine or powertrain warning light.
- Were there any injuries or crashes linked to these engine complaints?
- NHTSA data for this problem area on the 2010 Mariner lists 1 crash, 1 fire, and 4 injuries.