2003 Mercury Grand Marquis suspension problems
The 2003 Mercury Grand Marquis has 28 suspension complaints filed with NHTSA — 6% of the year's total, and up sharply from the prior model year.
28
Suspension complaints
6%
Share of year
0
Crash-involved
0
Related recalls
Suspension complaints by year
What owners report
“1.REAR SEATBELTS OFTEN JAM AND HAVE TO BE UNLOCKED BY A PROFESSIONAL. 2. BLEND DOOR SWITCH THAT CONTROLS HEAT AND AIR CONDITIONING GETS STUCK ON HEAT AND BLOWS EXTREMELY HOT AIR YEAR ROUND EVEN IF THE UNIT IS TURNED OFF. VEHICLE IS IN MOTION ON HIGHWAYS AND CITY STREETS. 3. VEHICLE SQUEAKS WHILE IN…”
Common questions
How many suspension complaints does the 2003 Mercury Grand Marquis have?
NHTSA has 28 complaints about the 2003 Mercury Grand Marquis suspension — 6% of all complaints filed for that model year.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.