Pontiac Grand Prix (5th generation)
The downsized pioneer of Pontiac's personal luxury era.
- Power
- 150 bhp
- 0–60 mph
- 10.5 s
- Top speed
- 109 mph
- Est. value
- $9k–$22k
About the Pontiac Grand Prix
The 1978 model year marked the debut of the fifth-generation Grand Prix, a pivotal 'downsized' design that shed over 600 lbs and 17 inches in length compared to its predecessor. Built on the GM A-body platform, it retained the classic long-hood, short-deck proportions while significantly improving fuel efficiency and handling. The 4.9-litre (301 cu in) V8 was the first engine designed specifically for this new era of efficiency, featuring a lightweight thin-wall casting. While it lacked the raw muscle of earlier big-block GPs, its reduced mass made it a surprisingly balanced and comfortable cruiser that became a staple of the American personal luxury segment.
Pontiac Grand Prix specs
The Pontiac Grand Prix produces 150 bhp (112 kW) and 325 Nm (240 lb-ft) of torque. It reaches 60 mph in 10.5 seconds and has a top speed of 109 mph (175 km/h).
| Make | Pontiac |
|---|---|
| Model | Grand Prix |
| Generation | Fifth Generation (5th generation) |
| Trim | 4.9 |
| Years | 1978–1987 |
| Type | Luxury |
| Body style | Coupé |
| Country | United States |
| Original price | About $5,100 when new |
| Engine | 4.9-litre V8 |
|---|---|
| Displacement | 4,942 cc (4.9 litres) |
| Induction | Naturally aspirated |
| Power | 150 bhp (112 kW) at 4,000 rpm |
| Torque | 325 Nm (240 lb-ft) |
| Redline | 4,800 rpm |
| 0–60 mph | 10.5 s |
| Top speed | 109 mph (175 km/h) |
| Transmission | 3-speed automatic |
| Drivetrain | Rear-wheel drive |
| Weight | 1,545 kg (3,406 lb) |
| Power-to-weight | 97 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is a Pontiac Grand Prix worth?
A typical Pontiac Grand Prix is estimated to be worth $8,500 – $22,000 (about £6,300 – £16,000).
Its original price when new was about $5,100.
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Pontiac Grand Prix rarity in CarSpot
The Pontiac Grand Prix is an Uncommon card in CarSpot, with a rarity score of 16 out of 100. Hot hatches and premium sporty cars. An Uncommon card is worth 20 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Pontiac Grand Prix fun facts
- The 301 cubic inch V8 was the last engine entirely designed and built by the Pontiac division before GM moved to corporate engines.
- Despite being smaller, the 1978 Grand Prix actually offered more usable interior room and trunk space than the massive 1977 model it replaced.
- The 1978 model year was the second-highest production year in the Grand Prix's entire 46-year history, trailing only the 1977 peak.
