# 1970 Opel GT vs 1970 Porsche 914: Retro Coupe Straight-Line Test Decide which of these two classic seventies coupes is quicker on DragGap's consistent, modelled estimates. Every figure below comes from a simulated DragGap estimate, not an instrumented real-world test. Published: 2026-08-25 ## DragGap comparison data | Result | 1970 Porsche 914 | 1970 Opel GT | |---|---:|---:| | Rated power | 59 kW | 66 kW | | Horsepower | 79 hp | 89 hp | | Mass | 900 kg | 940 kg | | 0–60 mph | 12.15 s | 10.75 s | | 0–100 km/h | 13.00 s | 11.50 s | | 1/4 mile | 18.536 s | 17.806 s | | 1 km | 33.499 s | 31.914 s | ## DragGap comparison data The table below summarises the key modelled figures from DragGap's simulation. Each value is an estimated output from a consistent simulation model, not a measured result. | Metric | 1970 Opel GT | 1970 Porsche 914 | |---|---:|---:| | Output | 66 kW / 89 hp | 59 kW / 79 hp | | Mass | 940 kg | 900 kg | | Drivetrain | Rear-wheel drive | Rear-wheel drive | | 0-60 mph | 10.75 s | 12.15 s | | 0-100 km/h | 11.50 s | 13.00 s | | 1/4 mile | 17.81 s | 18.54 s | | 1 km | 31.91 s | 33.50 s | | Top speed | 173.0 km/h | 170.6 km/h | ## Two icons of the 1970 model year The 1970 Opel GT and the 1970 Porsche 914 take two very different paths to the same idea: a light, rear-wheel-drive two-seat coupe built for cornering fun rather than raw horsepower. On paper, both are modestly powered by modern standards, which makes the comparison about efficiency, weight and gearing rather than muscle-car brawn. The Opel GT leads on output at a modelled 66 kW (89 hp), while the Porsche 914 produces 59 kW (79 hp). Interestingly, the Porsche is the lighter car at a modelled 900 kg against the Opel's 940 kg. Both are rear-wheel drive, so the straight-line story is driven almost entirely by the small power advantage and how each car converts it. ## Straight-line pace: the simulated race In DragGap's modelled estimate, the Opel GT gets to 0-100 km/h in about 11.50 seconds, ahead of the Porsche 914's roughly 13.00 seconds. The 1/4 mile tells a similar story: the Opel GT crosses in approximately 17.81 seconds versus 18.54 seconds for the Porsche 914. Over a full kilometre the Opel GT extends its lead, recording an estimated 31.91 seconds to the Porsche's 33.50 seconds, and the projected top speeds are close at about 173.0 km/h and 170.6 km/h respectively. Across the simulated straight line, the Opel GT is the victor. DragGap's model puts its finishing margin at roughly 1.59 seconds, which works out to about 70 metres of gap at the line. As always, these are simulated, modelled projections — not measured real-world results. ## Why the Opel GT wins in the simulation The Opel GT's victory in the modelled race comes down to its modest power edge. With roughly 7 kW more output on offer and a slightly heavier body, it still manages to out-accelerate the lighter Porsche at every point of the run in DragGap's estimate. The extra 10 horsepower of modelled output more than offsets the 40 kg mass penalty. The Porsche 914 keeps the gap respectable rather than embarrassing. Its lower mass means the deficit is contained, and over the longer kilometre run the Porsche holds on reasonably well despite the power shortfall — evidence that lightness does real work even in a straight line. ## Off the line: identical drive layouts Neither car has a traction advantage over the other in DragGap's model, because both are rear-wheel drive with broadly similar layouts. That keeps the launch phase honest and lets the power-to-weight relationship decide the outcome without an all-wheel-drive variable muddying the picture. In the real world, factors such as tyre condition, surface grip, gearing and driver skill would all influence how either car actually leaves the line. A straight-line simulation can't capture those details, so treat the projected times as consistent estimates for comparison rather than predictions for any specific car or road. ## Which one should you choose? If straight-line pace is your priority, the Opel GT is the clear pick from DragGap's simulation. It posts the faster projected times at every stage of the run and takes the modelled victory by a comfortable margin. But for buyers of this era, the choice was never purely about drag times. The Porsche 914's lighter weight and badge prestige made it a serious contender as a daily driver and back-road car, while the Opel GT offered distinctive styling at a friendlier price point. Different priorities lead to different answers — and in the simulation, the numbers just happen to favour the Opel GT. ## Frequently asked questions ### Which car is faster in a straight line? In the DragGap simulation the 1970 Opel GT is faster, with a modelled 0-100 km/h of about 11.50 s versus roughly 13.00 s for the 1970 Porsche 914. These are estimated figures, not measured real-world results. ### How much more power does the Opel GT have? The Opel GT produces 66 kW (89 hp), while the Porsche 914 produces 59 kW (79 hp) — a modelled difference of about 7 kW in the Opel's favour. ### Why is the Porsche 914 competitive despite less power? The Porsche 914 is the lighter car at a modelled 900 kg versus the Opel GT's 940 kg. That lower mass keeps it within a reasonable distance in the straight-line simulation despite the power gap. ### Are these real-world test results? No. All acceleration and race figures are simulated and modelled DragGap estimates. They are useful for comparison but are not instrumented real-world measurements. ### Which is the better daily driver of the two? Both are light, rear-wheel-drive two-seaters of the 1970 model year. The Porsche 914 is slightly lighter and carries badge prestige, while the Opel GT is cheaper to buy and only marginally quicker in the simulated straight line. ## Sources and method - [U.S. EPA FuelEconomy.gov](https://www.fueleconomy.gov/feg/ws/index.shtml) - [NHTSA vPIC](https://vpic.nhtsa.dot.gov/api/) - [Open Vehicle Specs (ODbL 1.0)](https://github.com/gor3a/vehicle-makes-models) - [DragGap methodology](https://draggap.com/methodology/) Winner field supplied by the simulator: Opel GT. All performance outputs are simulated estimates, not instrumented measurements.