2010 Mercury Mariner Vehicle Speed Control Problems
Owners have filed 66 complaints with NHTSA about vehicle speed control problems on the 2010 Mercury Mariner, 24% of all complaints for this model year. Half of the reports with a mileage happened before 50,000 miles. The words owners use most often: “throttle body” (67% of reports).
- 66vehicle speed control complaints
- 50,000median miles at failure
- 1mention a crash
- 1mention 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 44 of 66 complaints (67%)
- Turned off: mentioned in 13 of 66 complaints (20%)
- Side road: mentioned in 9 of 66 complaints (14%)
- Went limp: mentioned in 5 of 66 complaints (8%)
At what mileage do vehicle speed control problems happen?
Based on 62 complaints that reported the odometer reading.
How serious are the reports?
Of 66 complaints, 1 mention a crash, 1 an injury.
Mercury Mariner vehicle speed control complaints by model year
| Model year | Vehicle Speed Control complaints | Share of that year | Median miles |
|---|---|---|---|
| 2011 Mariner | 15 | 17% | 41,926 |
| 2010 Mariner | 66 | 24% | 50,000 |
| 2009 Mariner | 41 | 13% | 70,000 |
| 2008 Mariner | 31 | 7% | 78,500 |
| 2007 Mariner | 4 | 12% | 50,000 |
| 2006 Mariner | 13 | 21% | 87,750 |
| 2005 Mariner | 9 | 13% | 63,803 |
When owners reported it
Related recalls (0)
No safety recall lists vehicle speed control for the 2010 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.
When intering to tunnel my car suddenly speed up it felt like i had the gas pedle down to the floor. Even while holding the brake all the way down, this did not slow the car down much. There were no warning lights or check engine lights on then or now
Electronic throttle body p2119 code. All of the sudden losses power going into or out of traffic and the wrench tool light "lights up" it may go away by itself or not , "cut be scary" at times it has shut down in several instances on my own st or down the ave or another town etc... For no apparent…
Vehicle surges wildly at idle speeds in traffic. Vehicle stalls out while driving regular highway speed, surges wildly while driving, rpm spikes drastically while driving and at idle. Stalls and surges both while entering traffic from a stopped position and while driving at regular pace. Struggles…

Frequently asked questions
Do all 2010 Mercury Mariners have vehicle speed control problems?
No. NHTSA has 66 owner complaints about vehicle speed control for the 2010 Mercury Mariner (24% of the 270 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2010 Mercury Mariner vehicle speed control?
No recall currently lists vehicle speed control for this vehicle.
At what mileage do vehicle speed control problems start?
The median reported mileage is 50,000 miles: half of the reports with a mileage came before that.
What do owners say about vehicle speed control problems on the 2010 Mercury Mariner?
The most frequent phrase is “throttle body”, in 44 of 66 complaints, followed by “turned off” (13).
Other 2010 Mercury Mariner problems
See all 2010 Mercury Mariner problems or vehicle speed control problems across all Mariner years.