Mercury ยท 1984
1984 Mercury Marquis
Official EPA fuel economy and NHTSA recall record, best combined figure 20 MPG.
Fuel economy (EPA)
| Engine | Transmission | Fuel | City | Highway | Combined | CO2 g/mi |
|---|---|---|---|---|---|---|
| 2.3L 4-cyl | Automatic 3-spd | Regular | 18 | 22 | 20 | 444 |
| 3.8L 6-cyl | Automatic 3-spd | Regular | 16 | 20 | 17 | 523 |
| 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 23 | 19 | 468 |
| 3.8L 6-cyl | Automatic 3-spd | Regular | 16 | 20 | 18 | 494 |
| 5.0L 8-cyl | Automatic 4-spd | Regular | 15 | 22 | 17 | 523 |
| 2.3L 4-cyl | Automatic 3-spd | Regular | 17 | 22 | 19 | 468 |
| 3.8L 6-cyl | Automatic 3-spd | Regular | 16 | 20 | 18 | 494 |
| 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 22 | 19 | 468 |
| 5.0L 8-cyl | Automatic 4-spd | Regular | 14 | 20 | 16 | 555 |
Safety recalls (NHTSA)
2 campaigns on record for this model year. Recall repairs are free at dealers; check your exact vehicle by VIN on nhtsa.gov/recalls.
THE BOLTS THAT ATTACH THE D-SHAPED RING FOR THE SHOULDER BELT ARE INADEQUATELY SUPPORTED BY THE MATERIAL IN WHICH THEY ARE MOUNTED. THE ATTACHMENT DOES NOT COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 210, "SEAT BELT ASSEMBLY ANCHORAGES".
CERTAIN FEDERAL-MOGUL AFTERMARKET FUEL PUMPS SOLD UNDER THE BRAND NAMES OF CARTER, ACCUFLOW, NAPA, TRUFLOW, PARTS DEPO, AND PARTS MASTER, SHIPPED BETWEEN AUGUST 2006 AND JULY 2007 FOR USE ON THE VEHICLES LISTED ABOVE. THE FUEL PUMP DIAPHRAGM IN CERTAIN PRODUCTION RUNS MAY HAVE BEEN IMPROPERLY INSTALLED OR INADEQUATELY TESTED WHICH MAY CAUSE THE FUEL PUMP TO LEAK.
Owner complaints (NHTSA)
23 complaints filed by owners for this model year (1 involving a crash, 1 a fire). Complaints are owner reports, not confirmed defects - browse them in full on nhtsa.gov.
Frequently Asked Questions
What is the fuel economy of a 1984 Mercury Marquis?
EPA figures for the 1984 Mercury Marquis reach 20 MPG combined depending on configuration; the table on this page lists every tested engine and transmission combination.
Are there recalls on the 1984 Mercury Marquis?
NHTSA lists 2 safety recall campaigns for the 1984 Mercury Marquis. Check your specific vehicle by VIN on the official NHTSA site, recalls are fixed free of charge by dealers.
What are common problems with the 1984 Mercury Marquis?
Owners have filed 23 complaints with NHTSA for the 1984 Mercury Marquis, most often about: Electrical System, Power Train, Engine And Engine Cooling. Complaint counts reflect what owners report, not confirmed defects.
Sources: EPA fueleconomy.gov, the NHTSA recalls, complaints and 5-Star Safety Ratings databases (all US public data), refreshed monthly. Recall texts are quoted from the official record. Details on About & Data Sources.