2007 Mercury Grand Marquis: common problems

Owners of the 2007 Mercury Grand Marquis filed 96 complaints with NHTSA, most often about tires and structure. Details by component below, with sources.

Key figures

Owner complaints: 96
involving a crash: 6

What fails most often

1 Tires 24% of all complaints
2 Structure 19% of all complaints
3 Vehicle speed control 14% of all complaints
4 Steering 9% of all complaints
5 Air bags 6% of all complaints
6 Service brakes 6% of all complaints
7 Exterior lighting 5% of all complaints
8 Powertrain 5% of all complaints

Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Tires: 23 complaints (24% of all).
Structure: 18 complaints (19% of all).
Vehicle speed control: 13 complaints (14% of all), 4 of them with a crash reported by the owner.
Steering: 9 complaints (9% of all), 1 of them with a crash reported by the owner.
Air bags: 6 complaints (6% of all), 1 of them with a crash reported by the owner.

Engines and transmissions

US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.

4.6 L · petrol · 8 cyl
automatic, 4-speed

Drive: RWD

Symptoms owners describe

How many of the 96 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

rust, corrosion8 · 8%
warning lights, check engine5 · 5%
airbag warning light4 · 4%
fuel system, fuel smell4 · 4%
headlights and tail lights4 · 4%
unintended acceleration4 · 4%
tires: bulges, blowouts4 · 4%
vibration4 · 4%
knocking, grinding or other noise2 · 2%
overheating, coolant loss2 · 2%

Components owners complain about

Component	Owner complaints	involving a crash
Tires	23	0
Structure	18	0
Vehicle speed control	13	4
Steering	9	1
Air bags	6	1
Service brakes	6	0
Exterior lighting	5	0
Powertrain	5	0
Engine	4	0
Engine and cooling	3	0
Fuel/propulsion system	3	0
Seat belts	3	0
Wheels	3	1
Fuel system	2	0

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

Tl* the contact owns a 2007 mercury grand marquis. While pulling up to a traffic light, the vehicle accelerated forcefully. The brake pedal was depressed multiple times, but the vehicle accelerated and tapped the preceding vehicle. There were no injuries and a police report was not filed.
Vehicle speed control · crash · 2016-02-10 · NHTSA complaint #10825293
The contact then shifted into reverse and the vehicle surged backward until crashing into a concrete post. The vehicle was towed home. The failure was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure and current mileages were 26,093.
Vehicle speed control · crash · 2012-01-09 · NHTSA complaint #10442878
A possible loss of steering could result in death or injury if not addressed. My contact info is [XXX] Thanks! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Steering · 2025-12-27 · NHTSA complaint #11707228
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.
Engine · 2022-03-29 · NHTSA complaint #11458779
Confirmed a fuel leak in the fuel tank by observing a fuel drip. Continued driving the car for a few days. On june 15, 2020, I noticed a strange noise as I drove, something rubbing or bumping on the frame under the car. While driving, the noise increased and intensified.
Fuel/propulsion system · 2020-07-01 · NHTSA complaint #11331987
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.
Engine · 2020-01-30 · NHTSA complaint #11302984
While driving approximately 50 mph at night, the headlights turned off without warning. The contact utilized the high beam headlights. The contact took the vehicle to moffitt's ford lincoln [phone], located at 1819 se marshall st, boone, [ZIP]) where it was diagnosed that the lighting system needed to be replaced.
Exterior lighting · 2019-05-17 · NHTSA complaint #11208289
While operating the vehicle, the headlights suddenly shut off. The vehicle was taken to an independent mechanic who diagnosed that the headlight module was faulty and needed to be replaced. The vehicle was not repaired. An unknown dealer and the manufacturer were notified of the failure, but no assistance was offered.
Exterior lighting · 2019-04-22 · NHTSA complaint #11202798

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

20078
200815
200911
20109
20118
20127
20138
20144
20154
20165
20173
20186
20192
20203
20221
20241
20251

Comparison

By complaint count this model year ranks 3,666 of 36,656 model years in the NHTSA data (top 10% most complained about).

On average one model year of the Grand Marquis has 117 complaints (34 years in the data). This year has 96, below average.

What to check before buying

Tires. Tire age by DOT code, bulges, wear pattern.
Structure. Rails, pillars, panel gaps, signs of pulling or welding.
Vehicle speed control. Accelerator pedal, cruise control, throttle codes.
Steering. Steering play, power assist, rack and tie rods after a wheel impact.

Other years of this model

Questions and answers

What are the most common problems with the 2007 Mercury Grand Marquis?

Owner complaints to NHTSA most often mention: tires, structure, vehicle speed control. Total complaints: 96. The most frequent symptoms in complaint texts: rust, corrosion (8%), warning lights, check engine (5%), airbag warning light (4%).

How many service bulletins (TSB) were issued for the 2007 Mercury Grand Marquis?

NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 2007 Mercury Grand Marquis from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 2007 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.