Porsche 911 G-Series
The Porsche 911 G-Series (1974–1989): dimensions, weights, reliability and the official figures of its 6 versions in the United States.
Model codes: 930
Dimensions, weights and capacity
| Specification | Europe | North America | Wikipedia |
|---|---|---|---|
| Dimensions | |||
| Length | 4,290 mm RDW | – | 4,291 mm |
| Width | 1,650–1,780 mm RDW | – | 1,775 mm |
| Height | 1,010–1,320 mm RDW | – | 1,311 mm |
| Wheelbase | 2,270 mm RDW | – | 2,272 mm |
| Weights and towing | |||
| Kerb weight | 1,042–1,289 kg RDW | – | – |
| Mass in running order | 1,142–1,389 kg RDW | – | – |
| Gross vehicle weight | 1,400–1,680 kg RDW | – | – |
| Towing, braked trailer | 600–800 kg RDW | – | – |
| Towing, unbraked trailer | 480 kg RDW | – | – |
| Seats and space | |||
| Seats | 2–4 RDW | – | – |
| Doors | 2 RDW | – | – |
| Luggage space (EPA) | – | 113 L EPA | – |
| Passenger space (EPA) | – | 1,133–1,586 L EPA | – |
| Performance | |||
| Top speed | 205–245 km/h RDW | – | – |
| Torque | – | – | 343–430 Nm |
Ranges cover the generation’s versions and body styles; European and North American versions can differ. Sources: RDW type approvals (Netherlands), Wikipedia (en, sv), US EPA fuel economy data. Wikipedia figures are used under CC BY-SA 4.0.
Reliability and owner reports
UK MOT: first-time pass rate by age
| Age at test | Pass rate | UK average | Tests |
|---|---|---|---|
| 13 years and older | 87.3% (86.6–88.0) | 69.2% | 8,358 |
What the MOT finds
| Area | This model | UK average, same ages |
|---|---|---|
| Lights and electrics | 11.6% | 28.8% |
| Suspension | 10.2% | 41.6% |
| Brakes | 9.4% | 36.4% |
| Noise, emissions and leaks | 9.2% | 17.1% |
| Tyres | 5.9% | 31.2% |
| Visibility (glass, mirrors, wipers) | 5.8% | 11.8% |
First MOT test of each car per year in 2022–2024, from the DVSA’s anonymised test results; only ages with at least 500 tests are shown. The figure in brackets is the 95% confidence interval; green or red means clearly above or below the UK average. The second table shows how often an item was noted (defect or advisory) in each area, against the UK average for cars of the same ages. DVSA anonymised MOT tests (Open Government Licence)
Owner complaints to NHTSA (US)
6 complaints for model years 1983–1989. 1 injury
Complaints are reported by owners and not checked by NHTSA; they are not adjusted for how many cars were sold, so popular models have more. NHTSA owner complaints
All 6 versions of the Porsche 911 G-Series
United States 6 versions
Model years sold in the USA, from the EPA and the Department of Energy (fueleconomy.gov). MPG on the EPA test; litres per 100 km = 235.215 ÷ MPG.
| Years and version | Engine | Fuel | Gearbox | Drive | Consumption (combined) | CO₂ |
|---|---|---|---|---|---|---|
| 1989–1990(GUZZLER) (FFS) | 3.6 L | Petrol | 5-speed manual | Four- or all-wheel drive | 16 MPG (14.7 L/100 km) EPA | 345 g/km |
| 1988–1989(GUZZLER) (FFS), EMS | 3.2 L | Petrol | 5-speed manual | Rear-wheel drive | 18 MPG (13.1 L/100 km) EPA | 307 g/km |
| 1986–1989(FFS), SIL | 3.2 L | Petrol | 5-speed manual | Rear-wheel drive | 18–19 MPG (12.4–13.1 L/100 km) EPA | 291–307 g/km |
| 1989(GUZZLER) (FFS,TRBO) | 3.3 L | Petrol | 5-speed manual | Rear-wheel drive | 14–15 MPG (15.7–16.8 L/100 km) EPA | 368–394 g/km |
| 1986–1988(GUZZLER) (FFS,TRBO) | 3.3 L | Petrol | 4-speed manual | Rear-wheel drive | 17 MPG (13.8 L/100 km) EPA | 325 g/km |
| 1984(FFS) · (FFS) CA model | 3.2 L | Petrol | 5-speed manual | – | 18 MPG (13.1 L/100 km) EPA | 307 g/km |
Similar models from other brands
Official figures are measured on standard test procedures and differ between markets. Your consumption depends on how, where and in what conditions you drive.