Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1984 Regal.
The 1984 Buick Regal is specified with a 4-quart engine oil capacity and compatible viscosities of 20W-20, 10W-30, or 10W-40. This model year is marked by five recalls and six total owner complaints, with the structure cited as the top complaint area. Compared to the model's wider history from 1990 to 2020, which peaked at 325 complaints in 1998 and reached a low of one in 2008, this year's figures indicate a relatively low volume of owner dissatisfaction.
Fluid capacities, tune-up values and fuel economy at a glance.
Engine, drivetrain, dimensions and economy.
| Overall length | 196.1 in |
| Overall width | 71.3 in |
| Overall height | 56.3 in |
| Wheelbase | 108.3 in |
| Curb weight | 3219 lb |
| Weight distribution (front / rear) | 56/44 |
0–60 mph, quarter-mile, horsepower and torque from independent road tests.
Independent road tests for the Regal of this era, listed by trim and engine — this page spans more than one engine, so no single horsepower figure is shown.
| Year | Trim / engine | 0–60 | ¼ mile | HP | Drivetrain |
|---|---|---|---|---|---|
| 1984 | T-Type Coupe 3.8L Turbo V6 | 8.00 sec | 16.00 sec | 200 hp | RWD |
| 1985 | Grand National Coupe 3.8L Turbo V6 | 7.50 sec | 15.70 sec | 200 hp | RWD |
| 1986 | Grand National Coupe 3.8L Turbo V6 | 4.90 sec | 13.90 sec | 235 hp | RWD |
| 1986 | T-Type Coupe 3.8L Turbo V6 | 5.85 sec | 14.30 sec | 235 hp | RWD |
| 1981 | Indy Pace Car T-Top Cabriolet 4.1L V6 | 7.50 sec | 16.00 sec | 125 hp | RWD |
| 1987 | Grand National Coupe 3.8L Turbo V6 | 5.40 sec | 14.20 sec | 245 hp | RWD |
| 1987 | Grand National Coupe 3.8L Turbo V6 | 6.00 sec | 14.70 sec | 245 hp | RWD |
| 1987 | Grand National Coupe 3.8L Turbo V6 | 6.10 sec | 14.70 sec | 245 hp | RWD |
Capacities, torques and tune-up values from the factory service manual.
This engine holds 4 qt of 20W-20 / 10W-30 / 10W-40 engine oil, 80W-90 · GL-5 in the differential, DOT 3 brake fluid.
| Brake Fluid | DOT 3 |
| Differential Gear Oil | 80W-90 · GL-5 |
| Differential Gear Oil Capacity | 3.5 qt |
| Engine Coolant | ETHYLENE GLYCOL |
| Engine Oil | ABOVE 40 degrees F |
| Engine Oil Capacity | 4 qt |
| Engine Oil | ABOVE 40 degrees F |
| Engine Oil Capacity | 4 qt |
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The 1984 Buick Regal is not directly represented in the year-by-year federal record, which begins in 1990, so a direct year-over-year comparison is not possible. However, the target-year complaint data shows minimal issues: only one complaint each in Structure, Electrical System, Tires, and Latches/Locks/Linkages categories, with zero crash complaints and just one fire-related complaint, suggesting this specific example has a relatively clean complaint record. The available data begins with 1990 complaints at 103, which then rose to 249 in 1991—a spike that may reflect early-model-year issues for that generation—before gradually declining through the mid-1990s. Since the 1984 model predates the generation represented in the federal data by roughly six years, it belongs to a different platform entirely. Takeaway: the 1984 model year itself shows very few complaints in the record, but without contiguous year-by-year data for its own generation, it's difficult to assess long-term reliability trends for this specific vehicle; a thorough pre-purchase inspection remains essential regardless.
All 6 complaints on record, top 6 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 5 campaigns on record for this vehicle.
CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18… Remedy: HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 18, 2006. OWNERS MAY CONTACT FRAM CUSTOMER SERVICE AT 1-800-890-2075 (OPTION…
A SMALL NYLON BUSHING IN THE CRUISE CONTROL SERVO BAIL MAY SLIP OUT OF PLACE, CAUSING INTERMITTENT AND UNEXPECTED INCREASES IN ENGINE SPEED OR DIESELING (ENGINE RUN ON WITH IGNITION OFF). Remedy: INSTALL A NEW BUSHING IN CRUISE CONTROL SERVO BAIL.
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 qt of ABOVE 40 degrees F: 30, ABOVE 20 degrees F: 20W-20, 10W-30, 10W-40, 20W-40 OR 20W-50, ABOVE 10 degrees F 15W-40, BELOW 20 degrees F: 5W-20 OR 5W-30, per the factory manual.
NHTSA lists 5 recall campaign(s) for this model year. Check your specific vehicle by VIN.