Results are for year ending June 30, 2018. Only successfully completed repairs are currently included in the analysis. Routine maintenance, most wear items, recalls, and problems fixed with just a reflash or warning light reset are not included.
12 Grand Marquiss, 9.0 months of data per Grand Marquis, average 144400 miles
* Very small sample, members only.
2004 Mercury Grand MarquisMercuryGrand Marquis20041100.74626865671642excellent reliability: 25 Grand Marquiss, 9.5 months of data per Grand Marquis, average 116400 miles25
You won't find Mercury Grand Marquis reliability information like this anywhere else. Actual repair frequencies, not just vague dots. So you can tell how much the Mercury Grand Marquis truly differs from competing car models in reliability.
These stats have been promptly updated four times a year, to much more closely track Mercury Grand Marquis reliability as the cars age. Others tell you how reliable the Mercury Grand Marquis was a year ago, when the cars were a year younger and had 12,000 fewer miles on them. Only TrueDelta tells you how reliable the Mercury Grand Marquis has been recently.