Vehicle Data Hub

2005 Mercury Montego engine problems

Owners reported engine problems in 17 complaints for the 2005 Mercury Montego, 9% of the complaints on file.

At a glance

Complaints
17 9% of this year's complaints
Typical mileage
88,000 miles 16 complaints with mileage
Crashes and fires
0 and 0
Injuries and deaths
0 and 0

Source: NHTSA owner complaints

When engine problems show up

Engine complaints by mileage, 2005 Mercury Montego Complaints by odometer reading in 20,000-mile steps. The median is about 88,000 miles. 0k to 20k miles: 2 complaints 20k to 40k miles: 1 complaints 40k to 60k miles: 1 complaints 60k to 80k miles: 1 complaints 80k to 100k miles: 4 complaints 100k to 120k miles: 3 complaints 120k to 140k miles: 2 complaints 140k to 160k miles: 2 complaints 160k to 180k miles: 0 complaints 180k to 200k miles: 0 complaints 200k+ miles: 0 complaints 040k80k120k160k200k miles Typical: 88,000 miles
Based on 16 complaints that include mileage. 25% 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 miles2
20k to 40k miles1
40k to 60k miles1
60k to 80k miles1
80k to 100k miles4
100k to 120k miles3
120k to 140k miles2
140k to 160k miles2
160k to 180k miles0
180k to 200k miles0
200k+ miles0

What the data shows

Of the 16 engine complaints that report mileage, the median is about 88,000 miles, and 25% were reported before 60,000 miles.

None of the engine complaints mention a crash, fire, injury or death.

What owners wrote

Purchased vehicle in jan.05 seat belt replaced in jan transmission replaced in feb. 05 and a valve replaced due to check engine warning fuel pump replaced in aug.05, now have trouble starting car

Reported at 423 miles, January 2005

While idling when stopped or when moving slowly, the engine speed suddenly accelerates to above 3500 RPM causing the car to lurch forward unless the brake is firmly applied. The sudden acceleration lasts 3 to 5 seconds. Placing the gear into neutral has no effect on the engine speed. This happens sporadically. In the last 3 months it has happened approximately 7 times. Dealer says the car's computer system reports nothing unusual.

Reported at 27,000 miles, January 2010

Other problems reported for the 2005 Mercury Montego

Engine problems in other years

Engine problems across all Mercury models