Pontiac Grand Prix — the model line, not this exact trim. Photo: IFCAR · Public domain · Wikimedia Commons

1984 Pontiac Grand Prix

Pontiac · 5.7 L 8-cyl

See it on fueleconomy.gov

Model year1984

Combined MPG21

City MPG18

Highway MPG27

Annual fuel cost$4,550

Against the 893 pontiac cars

Combined MPG 21 MPGbest 42 · avg 22

Annual fuel cost $4,550best $1,600 · avg $3,281

Bars are scaled to the best in the list; the mark shows the list average. Lower is better for fuel cost; higher is better for the rest. All figures are the EPA's.

Summary

1984 Pontiac Grand Prix by Pontiac. The figures below are from US EPA fueleconomy.gov, with the page each one came from.

Details

Model year: 1984fueleconomy.gov · 3 Oct 2026

Efficiency

Combined MPG: 21fueleconomy.gov · 3 Oct 2026
City MPG: 18fueleconomy.gov · 3 Oct 2026
Highway MPG: 27fueleconomy.gov · 3 Oct 2026

Running cost

Annual fuel cost: $4,550fueleconomy.gov · 3 Oct 2026
CO₂ (tailpipe): 484.8 g/mifueleconomy.gov · 3 Oct 2026

Car

Body: Carfueleconomy.gov · 3 Oct 2026
EPA class: Midsize Carsfueleconomy.gov · 3 Oct 2026

Powertrain

Engine: 5.7 L 8-cylfueleconomy.gov · 3 Oct 2026
Transmission: Automatic 4-spdfueleconomy.gov · 3 Oct 2026
Fuel: Dieselfueleconomy.gov · 3 Oct 2026

More pontiac cars

See the list

PO 2010 Pontiac G3 (3-Door) 2010 · Front-Wheel Drive · 1.6 L 4-cyl Combined MPG30Annual fuel cost$2,250 PO 2010 Pontiac G3 (3-Door) 2010 · Front-Wheel Drive · 1.6 L 4-cyl Combined MPG28Annual fuel cost$2,400 PO 2010 Pontiac G3 (5-Door) 2010 · Front-Wheel Drive · 1.6 L 4-cyl Combined MPG28Annual fuel cost$2,400 PO 2010 Pontiac G3 (5-Door) 2010 · Front-Wheel Drive · 1.6 L 4-cyl Combined MPG30Annual fuel cost$2,250

2010 Pontiac G5 2010 · Front-Wheel Drive · 2.2 L 4-cyl Combined MPG29Annual fuel cost$2,300

2010 Pontiac G5 2010 · Front-Wheel Drive · 2.2 L 4-cyl Combined MPG27Annual fuel cost$2,500

Listed on CarCody

Pontiac Cars: Every Model and Year With MPG893 listed

Sources

fueleconomy.gov/feg/noframes/27036.shtml· checked 3 Oct 2026