really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
27,792 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2007 Mercury Mountaineer engine problems

engine problem

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2007 Mercury Mountaineer Owner Comments

problem #6

Oct 012013


  • miles


2007 Mercury Mountaineer. Consumer writes in regards to acceleration and console lighting issues and problems with back windshield wipers.

- Washington, DC, USA

problem #5

Nov 242012

Mountaineer 6-cyl

  • 97,700 miles
When braking the vehicle accelerates, when slowing down to a stop sign or a red light and it happens when parking forward or reverse. I recently purchased the vehicle 8/2012. I am very dispointed because I really like this SUV. I hope the dealer will fix this speed control problem free of charge because this situation could get dangerous.

- Rahway, NJ, USA

problem #4

Dec 152008


  • 50 miles
The contact owns a 2007 Mercury Mountaineer. While driving 12-14 mph and attempting to slow down to a stop, the vehicle lunged forward. The contact depressed the brake pedal more firmly to stop the vehicle. The vehicle was taken to a local mechanic who could not duplicate the failure. Once while driving in reverse, the vehicle lunged forward and pinned his son between his vehicle and another. The child sustained arm injuries. No police report was filed. The failure had been occurring since 2008. The vehicle was taken to the dealer but the contact was unsure of what the dealer did to remedy the problem. The failure continued and progressed to a more consistent problem. The vehicle had not been repaired. The VIN was unavailable. The failure mileage was 50 and the current mileage was 50,000.

- Scituate, MA, USA

problem #3

Aug 112010


  • 39,000 miles


When coming to slow stop, the vehicle will lunge forward before completely stopping. This behavior started several months ago and was very random in the beginning, but has become more and more frequent - almost every time I come to complete stop. Vehicle also hesitates when gas is pressed and then surges forward. That behavior is very random at this stage, but car has done that over the past year. Because of the "lunging" at stops, I have taken vehicle to repair shop and they indicate the vehicle's computer needs to be updated. This appears to be a common problem with this make/model/year.

- Ashland, MO, USA

problem #2

Sep 022009

Mountaineer 6-cyl

  • 30,000 miles
The contact owns a 2007 Mercury Mountaineer. Immediately after the vehicle was turned on without warning, it accelerated and crashed into a store. The police gave her a ticket for careless driving. The vehicle was towed to an authorized dealer. She was not informed of the repairs that were made to the vehicle. The contact has had problems with the vehicle since she purchased it. Prior to the failure, whenever she engaged the brake pedal the vehicle accelerated without warning; however, the dealer stated that there was nothing wrong with the vehicle. The vehicle was destroyed per the insurance company. The contact was always concerned about the safety risk and defect in the vehicle. The failure and current mileages were 30000. Updated 11/04/09. The consumer stated the vehicle made a noise when the gear was placed in reverse. Updated 11/05/09

- Belleville, MI, USA

problem #1

Jan 042007


  • miles
2007 Mercury Mountaineer customer states that the car suddenly surged and would not stop until she put the car in park*

- Paramus, NJ, USA

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