Mercury Mariner Fuel/propulsion System Problems
Owners have filed 109 complaints with NHTSA about fuel/propulsion system problems on the Mercury Mariner across 6 model years. The 2010 model year has the most (57). The words owners use most often: “throttle body” (36% of reports).
- 109fuel/propulsion system complaints
- —median miles at failure
- 0mention a crash
- 0mention an injury
- 0related recalls
- 44%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Throttle body: mentioned in 39 of 109 complaints (36%)
- Fuel gasoline: mentioned in 15 of 109 complaints (14%)
- Lost acceleration: mentioned in 7 of 109 complaints (6%)
- Minutes restarted: mentioned in 6 of 109 complaints (6%)
At what mileage do fuel/propulsion system problems happen?
Based on 83 complaints that reported the odometer reading.
How serious are the reports?
None of the 109 complaints report a crash, fire or injury.
Mercury Mariner fuel/propulsion system complaints by model year
| Model year | Fuel/propulsion System complaints | Share of that year | Median miles |
|---|---|---|---|
| 2011 Mariner | 22 | 25% | 49,000 |
| 2010 Mariner | 57 | 21% | 48,655 |
| 2009 Mariner | 15 | 5% | 76,750 |
| 2008 Mariner | 8 | 2% | 117,000 |
| 2006 Mariner | 4 | 6% | 100,000 |
| 2005 Mariner | 3 | 4% | 58,000 |
When owners reported it
Related recalls (0)
No safety recall lists fuel/propulsion system for the Mercury Mariner. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
Engine light came on after putting fuel in my car it is hapless the codes read emission and fuel issues to replace cap but it is hapless it says it's an issue that needs to be fixed now my engine light won't go off
Charcoal canister and purge valve defective stuck at open. Check engine light, dropped fuel economy. Forced vehicle to shut off engine and no power, stop on freeway at full speed.
My vehicle keeps throwing codes for the EVAP system. I have noticed many of these vehicles have to have their Purge Valve Cannister replaced along with the selenoid for it. I have to replace mine. Is that not a defect if the vehicle? I have owned several vehicles and never had this issue with any…
I bought a 2010 Mercury Mariner on June 22, 2023 from a local dealer. There are several recalls associated with the make and model of the vehicle, but they do not appear to be associated with the VIN on my vehicle. However, the recalls on the vehicle appear to be affecting my vehicle and there is a…
While driving on the highway my car just cut off in the middle lane. I was able to get into the emergency lane.

Frequently asked questions
Do all Mercury Mariners have fuel/propulsion system problems?
No. NHTSA has 109 owner complaints about fuel/propulsion system for the Mercury Mariner. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the Mercury Mariner fuel/propulsion system?
No recall currently lists fuel/propulsion system for this vehicle.
What do owners say about fuel/propulsion system problems on the Mercury Mariner?
The most frequent phrase is “throttle body”, in 39 of 109 complaints, followed by “fuel gasoline” (15).
Other Mercury Mariner problems
- Steering problems (557)
- Power Train problems (231)
- Vehicle Speed Control problems (179)
- Engine problems (162)
- Electrical System problems (105)
See all Mercury Mariner problems.