2007 Mercury Grand Marquis Engine Problems
- Complaints
- 4about this part
- Share
- 4%of 96 total for the year
- Median mileage
- 104,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the engine of the 2007 Mercury Grand Marquis, 4% of the 96 complaints for this model year. Where a mileage was given, the median is 104,000 miles.
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.
“I was driving the vehicle. As I started up a hill the speed limit changed. I gave the gas pedal a little push. It went to the floor where it stuck wide open. The car leaped forward and I immediately applied the brake. I really had to push the brake as hard as I could to get the vehicle to stop. When I got the vehicle to stop I knocked the gear shift out of drive into neutral. The engine was idling really rough but then it smoothed out. I did not crash the car and continued driving with no further problems. The vehicle has 64,875 miles on it and this is the first this has happened.”
NHTSA complaint #10995618, filed 2017-06, 64,875 miles“The contact owns a 2007 Mercury Grand Marquis. The contact stated that while the vehicle was idling, the RPM’s revved up and the vehicle lunged forward. The contact depressed the brake pedal and the RPM’s decreased. There were no warning lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 100,000.”
NHTSA complaint #11458779, filed 2022-03, 100,000 miles“The contact owns a 2007 Mercury Grand Marquis. The contact stated that when the vehicle was started, the check engine light illuminated and flashed. The vehicle was taken to an independent mechanic who diagnosed that the intake manifold fractured anti-freeze leaked into the oil. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 140,000.”
NHTSA complaint #11302984, filed 2020-01, 140,000 milesRelated service bulletins
- 10166447Sep 18, 2019This SKU is a Radiator Fan. The customer communication requested return of unsold inventory to inspect the electrical connections. An electrical connection issue may lead to the…
- 10109070Sep 21, 2016The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to…
- 10045340Jul 10, 2012Ford/lincoln/mercury: if battery was disconnected or dead, vehicles/trucks may experience hard starts and engine idle rpm fluctuation and exhibit diagnostic trouble codes (dtcs)…
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2010 | 1 | 4% |
| 2009 | 2 | 8% |
| 2008 | 4 | 5% |
| 2007 | 4 | 4% |
| 2006 | 8 | 6% |
| 2005 | 5 | 1% |
| 2004 | 4 | 1% |
| 2003 | 5 | 1% |
| 2002 | 2 | 3% |
| 2001 | 9 | 6% |
| 2000 | 8 | 5% |
| 1999 | 7 | 4% |
| 1998 | 3 | 2% |
| 1997 | 2 | 1% |
| 1996 | 1 | 0% |
| 1994 | 1 | 1% |
| 1990 | 1 | 2% |
| 1985 | 1 | 5% |
Other parts of the 2007 Mercury Grand Marquis
23 complaintsBody and structure
18 complaintsVehicle speed control
13 complaintsSteering
9 complaintsAir bags
6 complaintsBrakes
6 complaintsExterior lighting
5 complaintsFuel system
5 complaintsTransmission and drivetrain
5 complaintsEngine cooling
3 complaintsSeat belts
3 complaintsWheels
3 complaints
← All problems reported for the 2007 Mercury Grand Marquis
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 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