Vehicle Data Hub

2004 Mercury Mountaineer engine problems

Owners reported engine problems in 20 complaints for the 2004 Mercury Mountaineer, 7% of the complaints on file.

At a glance

Complaints
20 7% of this year's complaints
Typical mileage
70,000 miles 18 complaints with mileage
Crashes and fires
1 and 1
Injuries and deaths
0 and 0

Source: NHTSA owner complaints

When engine problems show up

Engine complaints by mileage, 2004 Mercury Mountaineer Complaints by odometer reading in 20,000-mile steps. The median is about 70,000 miles. 0k to 20k miles: 4 complaints 20k to 40k miles: 1 complaints 40k to 60k miles: 3 complaints 60k to 80k miles: 2 complaints 80k to 100k miles: 4 complaints 100k to 120k miles: 0 complaints 120k to 140k miles: 1 complaints 140k to 160k miles: 2 complaints 160k to 180k miles: 0 complaints 180k to 200k miles: 0 complaints 200k+ miles: 1 complaints 040k80k120k160k200k miles Typical: 70,000 miles
Based on 18 complaints that include mileage. 44% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles4
20k to 40k miles1
40k to 60k miles3
60k to 80k miles2
80k to 100k miles4
100k to 120k miles0
120k to 140k miles1
140k to 160k miles2
160k to 180k miles0
180k to 200k miles0
200k+ miles1

What the data shows

Of the 18 engine complaints that report mileage, the median is about 70,000 miles, and 44% were reported before 60,000 miles.

These complaints mention 1 crash, 1 fire.

What owners wrote

Tl*the contact owns a 2004 mercury mountaineer. While having the vehicle serviced for routine maintenance at an authorized dealer the contact could smell a burning odor. The contact was told the engine manifold was cracked and leaking. The vehicle was repaired. A few days later the vehicle began shaking while stopped. The vehicle was taken back to an authorize dealer where the contact was told the engine coils and spark plugs needed to be replaced. The vehicle was repaired.

Reported at 46,845 miles, February 2011 Fire

Tl* the contact owns a 2004 mercury mountaineer. The contact stated that while driving approximately 40 MPH, the vehicle stalled and there was a sudden loss of power steering. The contact mentioned that the check engine warning light illuminated. The vehicle was taken to a private mechanic where the failure was unable to be replicated. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure mileage was 70,000 and the current mileage was 110,000.

Reported at 70,000 miles, July 2008

Other problems reported for the 2004 Mercury Mountaineer

Engine problems in other years

Engine problems across all Mercury models