Most common 2010 Mercury Mariner Hybrid problems
Share of the 9 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercury Mariner Hybrid complaints by model year
Best Mariner Hybrid years: 2010, 2009. Years to avoid: 2008. Compare all years →
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 2010 Mercury Mariner Hybrid:
Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles.
Loss of power steering while driving
On May 27, 2014, amended June 2, 2014, Ford Motor Company (Ford) submitted a Defect Information Report (DIR) to NHTSA describing a safety defect that may result in a sudden loss of power steering assist while driving in approximately 746,067 model year (MY) 2008 through 2011 Ford Escape vehicles equipped with electric power assisted steering (NHTSA 14V-284, Ford 14S05).
What 2010 Mercury Mariner Hybrid owners say
Speed control & acceleration
Was stopped at a red light, car had been driving fine, but when the light turned green and I proceeded my car suddenly had reduced power and would not drive more than 40-45 MPH. No lights or anything came on the dash the first time. The second time however a yellow/orange wrench light appeared. I got home and parked for the remainder of the day but then the following day the problem still proceeded and I then let it sit all weekend. The following Monday I turned it on to take to the repair shop and the car drove fine that entire day. The next day, Tuesday, while driving home from work it happened again only I couldnt go faster than 30mph in a 55 MPH zone. Car was taken back to shop and diagnosed as a failure in the throttle body. During this time of reduced power fans in the trunk space got extremely loud and began sucking in air, as if trying to cool the batteries. …
While driving and attempting top accelerate up to speed, the vehicle began to slow and hesitate. It would not properly accelerate. After going a short distance at reduced speed, the vehicle began to shake and hesitate. I was able to make it home (luckily not too far). The wrench symbol on the dash illuminated during this episode as wheel. I checked theowners manual and then called my local dealer who recommended the care be towed to dealer and not driven. This was done the next dayand after a full day of checking the vehicle, the dealer advised they had no idea what the problems was. They released the care to me. The next week the same situation happened several more time and finally, while on the way to dealer, it happened again with the service engine light coming on as well. This time the dealer identified the problem as the throttle body and replaced it at a cost inexcess of $500.
2010 Mercury Mariner Hybrid engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.5L 4-cyl hybrid | CVT | FWD | 34 / 31 / 32 |
| 2.5L 4-cyl hybrid | CVT | 4WD | 30 / 27 / 29 |
EPA ratings. Class: SUV.
Frequently asked questions
Is the 2010 Mercury Mariner Hybrid a good car?
Based on 9 owner complaints filed with NHTSA, the 2010 Mariner Hybrid rates better than average: 60% fewer complaints than a typical year of the Mariner Hybrid at the same age. It is one of the best Mariner Hybrid years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2010 Mercury Mariner Hybrid?
The speed control & acceleration — 3 complaints, 33% of all complaints for this model year. Next are the engine & cooling (2) and transmission & drivetrain (2).
How many recalls does the 2010 Mercury Mariner Hybrid have?
NHTSA lists no recalls for the 2010 Mercury Mariner Hybrid. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Mercury Mariner Hybrid?
The best years by complaints, compared at the same age, are 2010 and 2009. Years to avoid or approach with caution: 2008. See the full Mercury Mariner Hybrid years comparison.
At what mileage do 2010 Mercury Mariner Hybrid problems happen?
The median mileage reported in complaints is about 64,000 miles; 38% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.