2010 Mercury Mariner Vehicle Speed Control Problems

Source: NHTSA · Updated Aug 11, 2026 · 66 complaints analyzed

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).

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.

Under 10k miles0 · 0%
10k–25k miles2 · 3%
25k–50k miles27 · 44%
50k–75k miles20 · 32%
75k–100k miles10 · 16%
100k–150k miles3 · 5%
150k+ miles0 · 0%

How serious are the reports?

Of 66 complaints, 1 mention a crash, 1 an injury.

Mercury Mariner vehicle speed control complaints by model year

Peak: 2010, with 66 complaints
2005: 9200592006: 132006132007: 4200742008: 312008312009: 412009412010: 662010662011: 15201115

n = 179 complaints · Source: NHTSA

Model yearVehicle Speed Control complaintsShare of that yearMedian miles
2011 Mariner1517%41,926
2010 Mariner6624%50,000
2009 Mariner4113%70,000
2008 Mariner317%78,500
2007 Mariner412%50,000
2006 Mariner1321%87,750
2005 Mariner913%63,803

When owners reported it

Peak: 2013, with 53 complaints
2012: 1201212013: 532013532014: 8201482015: 2201522016: 220162

n = 66 complaints · Source: NHTSA

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

Received Oct 20, 2016 · NHTSA complaint 10917605

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…

Received Aug 27, 2016 · NHTSA complaint 10901990

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…

Received Jun 25, 2015 · NHTSA complaint 10730299
Mercury Mariner
2005-2007 Mercury Mariner photographed in College Park, Maryland , USA.. Representative photo; appearance varies by model year. Photo: IFCAR, Public domain, via Wikimedia Commons.

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.