2010 Mercury Mariner Fuel/propulsion System Problems

Source: NHTSA · Updated Aug 11, 2026 · 57 complaints analyzed

Owners have filed 57 complaints with NHTSA about fuel/propulsion system problems on the 2010 Mercury Mariner, 21% of all complaints for this model year. Half of the reports with a mileage happened before 48,655 miles. The words owners use most often: “throttle body” (47% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Throttle body: mentioned in 27 of 57 complaints (47%)
  • Fuel gasoline: mentioned in 10 of 57 complaints (18%)
  • Lost acceleration: mentioned in 5 of 57 complaints (9%)

At what mileage do fuel/propulsion system problems happen?

Based on 44 complaints that reported the odometer reading.

Under 10k miles0 · 0%
10k–25k miles2 · 5%
25k–50k miles21 · 48%
50k–75k miles6 · 14%
75k–100k miles8 · 18%
100k–150k miles6 · 14%
150k+ miles1 · 2%

How serious are the reports?

None of the 57 complaints report a crash, fire or injury.

Mercury Mariner fuel/propulsion system complaints by model year

Peak: 2010, with 57 complaints
2005: 3200532006: 4200642008: 8200882009: 152009152010: 572010572011: 22201122

n = 109 complaints · Source: NHTSA

Model yearFuel/propulsion System complaintsShare of that yearMedian miles
2011 Mariner2225%49,000
2010 Mariner5721%48,655
2009 Mariner155%76,750
2008 Mariner82%117,000
2006 Mariner46%100,000
2005 Mariner34%58,000

When owners reported it

Peak: 2013, with 27 complaints
2013: 272013272014: 4201442015: 2201522016: 2201622017: 5201752018: 8201882019: 1201912020: 3202032022: 1202212023: 3202332025: 120251

n = 57 complaints · Source: NHTSA

Related recalls (0)

No safety recall lists fuel/propulsion system 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.

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

Received May 11, 2025 · NHTSA complaint 11660227

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…

Received Sep 9, 2023 · NHTSA complaint 11543619

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…

Received Aug 13, 2023 · NHTSA complaint 11538243
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 fuel/propulsion system problems?

No. NHTSA has 57 owner complaints about fuel/propulsion system for the 2010 Mercury Mariner (21% 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 fuel/propulsion system?

No recall currently lists fuel/propulsion system for this vehicle.

At what mileage do fuel/propulsion system problems start?

The median reported mileage is 48,655 miles: half of the reports with a mileage came before that.

What do owners say about fuel/propulsion system problems on the 2010 Mercury Mariner?

The most frequent phrase is “throttle body”, in 27 of 57 complaints, followed by “fuel gasoline” (10).

Other 2010 Mercury Mariner problems

See all 2010 Mercury Mariner problems or fuel/propulsion system problems across all Mariner years.