1984 Buick Riviera

US · Compact Cars

The 1984 Buick Riviera is listed in the US market. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.

Engine: Varies by configuration: 3.8L 6-cylinder turbocharged (FFS,TRBO), 4.1L 6-cylinder (FFS) CA model), 4.1L 6-cylinder (FFS), 5.0L 8-cylinder (GM-OLDS) CA model), 5.0L 8-cylinder (GM-OLDS), 5.7L 8-cylinder (350 V8) (DIESEL)
Transmission: 4-speed automatic
Fuel: Varies by configuration: Gasoline, Diesel
Economy: 15 mpg (15.7 L/100 km) to 21 mpg (11.2 L/100 km) combined

Generic outline for this body type. An illustration, not a photograph.

Specifications at a Glance

Key Figures

Units:

Engine / Powertrain

3.8L 6-cylinder turbocharged (FFS,TRBO), 4.1L 6-cylinder (FFS) CA model), 4.1L 6-cylinder (FFS), 5.0L 8-cylinder (GM-OLDS) CA model), 5.0L 8-cylinder (GM-OLDS), 5.7L 8-cylinder (350 V8) (DIESEL)

Combined Economy

15 mpg (15.7 L/100 km) to 21 mpg (11.2 L/100 km) combined

Transmission

4-speed automatic

Market: US·Switch units to convert the figures shown.

Compare 1984 Buick Riviera ↗

Engine

Engine
Specification	Value	Source
Engine	Varies by configuration: 3.8L 6-cylinder turbocharged (FFS,TRBO), 4.1L 6-cylinder (FFS) CA model), 4.1L 6-cylinder (FFS), 5.0L 8-cylinder (GM-OLDS) CA model), 5.0L 8-cylinder (GM-OLDS), 5.7L 8-cylinder (350 V8) (DIESEL)
Displacement	3.8 L to 5.7 L
Cylinders	6 to 8
Aspiration	Turbocharged
Fuel type	Varies by configuration: Gasoline, Diesel	EPA fueleconomy.gov

Transmission and drivetrain

Transmission and drivetrain
Specification	Value	Source
Transmission	Automatic	EPA fueleconomy.gov
Gears	4

Fuel economy and range

Fuel economy and range
Specification	Value	Source
Combined	15 mpg (15.7 L/100 km) to 21 mpg (11.2 L/100 km)	EPA fueleconomy.gov
City	13 mpg (18.1 L/100 km) to 18 mpg (13.1 L/100 km)
Highway	19 mpg (12.4 L/100 km) to 26 mpg (9.0 L/100 km)

Our sources do not publish these for this vehicle: Power, Torque, Drivetrain, Electric range, Battery capacity. We leave them out instead of estimating.

Trims and configurations

11 configurations listed by our sources. Engines, drivetrains and fuel economy can differ between them.

Recalls

NHTSA lists 2 recall campaigns for this model year. Last checked November 9, 2026.

06E043000: FUEL SYSTEM, GASOLINE
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, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS…
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 1).
Reported May 19, 2006. View on NHTSA
89V102000: VEHICLE SPEED CONTROL
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.
Reported June 16, 1989. View on NHTSA

Data sources

EPA fueleconomy.gov · retrieved October 24, 2026 · US Government public data
NHTSA vPIC · retrieved October 24, 2026 · US Government public data

Source checked: October 24, 2026

Data verified: October 25, 2026

Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.

Related vehicles

1985 Buick Riviera
Varies by configuration: Gasoline, Diesel
Varies by configuration: 5.0L 8-cylinder ((GM-OLDS) (FFS) CA model), 3.8L 6-cylinder turbocharged ((FFS,TRBO)), 5.0L 8-cylinder ((GM-OLDS) (FFS)), 5.7L 8-cylinder ((350 V8)) · FWD
21 mpg (11.2 L/100 km) to 17 mpg (13.8 L/100 km)

Frequently asked questions

What engine does the 1984 Buick Riviera have?

Varies by configuration: 3.8L 6-cylinder turbocharged ((FFS,TRBO)), 4.1L 6-cylinder ((FFS) CA model), 4.1L 6-cylinder ((FFS)), 5.0L 8-cylinder ((GM-OLDS) CA model), 5.0L 8-cylinder ((GM-OLDS)), 5.7L 8-cylinder ((350 V8) (DIESEL)). Engines can differ by trim, so check the trim list below.

What is the fuel economy of the 1984 Buick Riviera?

Combined fuel economy is 15 mpg (15.7 L/100 km) to 21 mpg (11.2 L/100 km), as published by the source shown in the specification table.

Are there recalls for the 1984 Buick Riviera?

NHTSA lists 2 recall campaigns for this model year (last checked November 9, 2026). Details are in the Recalls section.