2000 Mercury Mountaineer Engine cooling Problems
- Complaints
- 5about this part
- Share
- 4%of 123 total for the year
- Median mileage
- 49,654miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the engine cooling of the 2000 Mercury Mountaineer, 4% of the 123 complaints for this model year. Where a mileage was given, the median is 49,654 miles. 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Oxygen sensor. Replaced by ford on 1/17/05. Has 69336 miles.11/14/04 replaced air filter in order to extend life of o2 sensor. 2/5/04 weak fuel pump 49804 miles. 10/13/03 oxygen sensor replaced. 45742 miles. 10/9/03 mass air flow sensor replaced. 45616 miles. 8/21/03- replace iac. 43536 miles. 5/22/03 replace oxygen sensor. 41308 miles.”
NHTSA complaint #10108319, filed 2005-01, 41,308 miles“Consumer noticed an extreme amount of fluid in the driveway which did not appear to be oil. After taking the vehicle to the dealer it was discovered that head gasket blew out. Consumer had the repairs done. Less than two months later, while driving , the gears would not connect properly. Consumer had to have the transmission replaced.”
NHTSA complaint #10115335, filed 2005-03, 58,000 miles“The contact owned a 2000 Mercury Mountaineer. While driving approximately 65 MPH, fuel fumes emitted into the vehicle and the engine began to smoke before it caught fire. The check engine indicator illuminated. The fire department was able to extinguish the fire. The vehicle was towed to the contact's residence. The vehicle was deemed destroyed. The manufacturer was not notified of the failure. The approximate failure mileage was 240,000.”
NHTSA complaint #10648414, filed 2014-10, 240,000 miles“The steering gear was replaced, the dealership did not complete front end alignment after replacement which resulted in excessive wear of the front tires, consumer is requesting reimbursement for replacement tires that were required.”
NHTSA complaint #559104, filed 2001-01Engine cooling: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2008 | 3 | 3% |
| 2007 | 4 | 5% |
| 2006 | 43 | 37% |
| 2005 | 5 | 6% |
| 2004 | 11 | 5% |
| 2003 | 10 | 7% |
| 2002 | 33 | 9% |
| 2001 | 1 | 5% |
| 2000 | 5 | 4% |
| 1999 | 12 | 8% |
| 1998 | 20 | 8% |
| 1997 | 14 | 4% |
Other parts of the 2000 Mercury Mountaineer
28 complaintsTires
22 complaintsElectrical system
19 complaintsTransmission and drivetrain
15 complaintsAir bags
9 complaintsBrakes
8 complaintsSeats
7 complaintsEquipment
6 complaintsBody and structure
6 complaintsSuspension
6 complaintsSteering
5 complaintsEngine
4 complaints
← All problems reported for the 2000 Mercury Mountaineer
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology