Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1984 Topaz.
The 1984 Mercury Topaz carries a routine-service baseline of 4.0 quarts of engine oil, specified across 5W-30, 10W-30, or 10W-40 viscosities. In the reliability record, this model year drew 11 owner complaints, with the Electrical System standing out as the most reported problem area, alongside 6 recalls. Those figures sit outside the broader Topaz complaint-tracking window, which runs from 1990 to 1998 and peaks at 100 complaints for the 1994 model year before falling to a single complaint by 1998, meaning the 1984 edition predates the comparable dataset and must be judged largely on its own limited record.
Fluid capacities, tune-up values and fuel economy at a glance.
Engine, drivetrain, dimensions and economy.
| Overall length | 176.4 in |
| Overall width | 66.1 in |
| Overall height | 52.8 in |
| Wheelbase | 100 in |
| Curb weight | 2529 lb |
| Weight distribution (front / rear) | 62/38 |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4.0 qt of 5W-30 / 10W-30 / 10W-40 engine oil, DOT 3 brake fluid.
| Brake Fluid | DOT 3 |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | 5W-30 · 10W-30 · 10W-40 · 15W-40 · 20W-40 · 20W-50 |
| Engine Oil Capacity | 4.0 qt |
| Engine Oil | 5W-30 · 10W-30 · 10W-40 · 15W-40 · 20W-40 · 20W-50 |
| Engine Oil Capacity | 5.0 qt |
| Engine Oil | 5W-30 · 10W-30 · 10W-40 · 15W-40 · 20W-40 · 20W-50 |
| Engine Oil Capacity | 7.2 qt |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The federal record supplied contains complaint, recall, investigation, and TSB figures only for model years 1990 through 1998, with no entry for the 1984 Mercury Topaz. Consequently, there are no numbers to compare the target year against preceding or subsequent years, and the complaint‑recall trend across the generation cannot be derived from this dataset. The absence of 1984 data means we cannot state whether electrical, engine, or fire‑related issues were more or less prevalent that year relative to nearby model years. Without specific federal‑record metrics for 1984, any assessment of its reliability would be speculative and outside the permitted scope. Therefore, based solely on the provided information, there is insufficient evidence to conclude whether the 1984 Topaz is a good or bad year to buy.
All 11 complaints on record, top 4 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 6 campaigns on record for this vehicle.
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… Remedy: FEDERAL-MOGUL WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 15, 2007. OWNERS CAN CONTACT FEDERAL-MOGUL AT 248-354-7700.
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… Remedy: DEALERS WILL INSTALL NEW ATTACHING HARDWARE TO IMPROVE THE STRENGTH OF THE MOUNTING.
Showing 5 of 14 bulletins on record with NHTSA.
| Bulletin | Date | Component | Summary |
|---|---|---|---|
| 01157 | 2001-08-06 | Unknown Or Other | INFORMATION REGARDING TRANSMISSION FLUID USAGE CHARTS. *SLC |
| 98246 | 1998-12-07 | Electrical System | FORD MOTOR COMPANY HAS RELEASED A NEW ELECTRICAL GREASE ( F8AZ - 19G208-AA ) TO REDUCE… |
| 9874 | 1998-04-13 | Engine And Engine Cooling | A NEW SILICONE GASKET AND SEALANT. *YC |
| 9852 | 1998-04-13 | Tires | INFORMATION ON TIRE COMPANY TELEPHONE NUMBERS FOR CUSTOMER ASSISTANCE. *YC |
| 985A13 | 1998-03-18 | Service Brakes, Hydraulic | THE USE OF PETROLEUM-BASED GREASE AS A LUBRICANT IN SERVICING DISC BRAKES IS NO LONGER… |
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.
Cross-vehicle references for the kinds of data on this page.
4.0 qt of 30W. MULTI-VISCOSITY: BELOW 100 degrees F 5W-30. ABOVE 0 degrees F 10W-30 OR 10W-40. ABOVE 10 degrees F 15W-40. ABOVE 20 degrees F 20W-40 OR 20W-50, per the factory manual.
NHTSA lists 6 recall campaign(s) for this model year. Check your specific vehicle by VIN.