2008 Mercury Grand Marquis vehicle speed control problems
15 owner complaints filed with NHTSA name the vehicle speed control on the 2008 Mercury Grand Marquis — 19% of all complaints for this model year.
What owners report
“I was driving in town and several times when I slowed down to stop at a stop sign or corner, after braking my car accelerated by itself. The engine revved up and made the car jump forward. I had to slightly release the brake snd brake harder to stop and avoid going into the intersection.”
filed Mar 9, 2021
“The car will suddenly and without warning accelerate to 5000 rpm's. Had throttle body and mas replaced which seemed to help. However, it still happens once in a while (once every 3 weeks average). Usually happens after shifting from park to drive and driving forward at low speeds (around 5-10 mph)…”
filed May 11, 2019
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Vehicle Speed Control problems in other Grand Marquis years
| Year | Reports | Share |
|---|---|---|
| 2010 Grand Marquis | 3 | 13% |
| 2009 Grand Marquis | 4 | 15% |
| 2007 Grand Marquis | 13 | 14% |
| 2006 Grand Marquis | 37 | 26% |
| 2005 Grand Marquis | 39 | 8% |
| 2004 Grand Marquis | 23 | 7% |
| 2003 Grand Marquis | 27 | 7% |
| 2002 Grand Marquis | 17 | 22% |
| 2001 Grand Marquis | 27 | 17% |
| 2000 Grand Marquis | 13 | 8% |
| 1999 Grand Marquis | 12 | 7% |
| 1998 Grand Marquis | 9 | 6% |
Other reported problem areas on the 2008 Mercury Grand Marquis
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.