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Compare
Compare 2–4 cars side by side. Every figure is sourced; the best value in each comparable row is marked.
| Specification | Porsche2025 Porsche 911 Carrera 4 GTS | BMW2025 BMW M8 Competition Coupe |
|---|---|---|
| Performance | ||
| Top speedHigher is better | 194 mphBestManufacturer claim · Porsche | 189 mphManufacturer claim · BMW |
| Power-to-weight ratioHigher is betterCalculated from peak power and curb weight — figures quoted against a different weight basis (e.g. dry or DIN) will differ. | 322.7 hp/tBestCalculated | 316.7 hp/tCalculated |
| Lateral accelerationSkidpad radius and surface affect results. | 1.07 gIndependent test · MotorTrend | — |
| Acceleration | ||
| 0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers. | 2.90 sTieManufacturer claim · Porsche | 3.00 sTieManufacturer claim · BMW |
| 0–100 km/hLower is better | 3.00 sBestManufacturer claim · Porsche | 3.20 sManufacturer claim · BMW |
| 0–100 mph | — | 6.30 sIndependent test · Car and Driver |
| 0–200 km/hLower is better | 10.7 sManufacturer claim · Porsche | 10.6 sBestManufacturer claim · BMW |
| Quarter-mile elapsed time | 11.10 sManufacturer claim · Porsche | — |
| Braking | ||
| 70–0 mph braking distance | — | 146.0 ftIndependent test · Car and Driver |
| 100–0 mph braking distance | — | 288.0 ftIndependent test · Car and Driver |
| Engine & Powertrain | ||
| Peak powerHigher is better | 532 hpManufacturer claim · Porsche | 617 hpBestManufacturer claim · BMW |
| Peak torqueHigher is better | 449 lb-ftManufacturer claim · Porsche | 553 lb-ftBestManufacturer claim · BMW |
| Engine displacement | 3600.0 ccManufacturer claim · Porsche | 4395.0 ccManufacturer claim · BMW |
| Cylinder count | 6Manufacturer claim · Porsche | 8Manufacturer claim · BMW |
| Engine layout | Flat-6Manufacturer claim · Porsche | V8Manufacturer claim · BMW |
| Engine placement | RearManufacturer claim · Porsche | |
| Dimensions | ||
| Length | 179 inManufacturer claim · Porsche | 191 inManufacturer claim · BMW |
| Width | 73 inManufacturer claim · Porsche | 75 inManufacturer claim · BMW |
| Height | 51 inManufacturer claim · Porsche | 53 inManufacturer claim · BMW |
| Wheelbase | 97 inManufacturer claim · Porsche | 111 inManufacturer claim · BMW |
| Weight | ||
| Curb weightLower is better | 3635 lbBestManufacturer claim · Porsche | 4295 lbManufacturer claim · BMW |
| Fuel Economy | ||
| Fuel economy (combined)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 19.0 mpgBestHomologation · US EPA | 17.0 mpgHomologation · US EPA |
| Fuel economy (city)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 17.0 mpgBestHomologation · US EPA | 15.0 mpgHomologation · US EPA |
| Fuel economy (highway)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 23.0 mpgBestHomologation · US EPA | 22.0 mpgHomologation · US EPA |
| Fuel tank capacity | 16.6 galManufacturer claim · Porsche | 20.1 galManufacturer claim · BMW |
| Estimated range (combined)Higher is betterEstimated from tank capacity and quoted combined economy — not an instrumented range. | ||
| Electric System | ||
| Battery gross capacity | 1.9 kWhManufacturer claim · Porsche | — |
| Practicality | ||
| Cargo volumeHigher is better | 5 ft³Manufacturer claim · Porsche | 15 ft³BestManufacturer claim · BMW |
| Seats | 4Manufacturer claim · Porsche | 4Manufacturer claim · BMW |
| Pricing | ||
| Base price (as tested market)Demo prices only; not live FX. | $174,695Independent test · Kelley Blue Book | $138,800Independent test · Kelley Blue Book |
| Tires & Wheels | ||
| Front tire size | 245/35 ZR20Manufacturer claim · Porsche | 275/40ZR19Manufacturer claim · BMW |
| Rear tire size | 315/30 ZR21Manufacturer claim · Porsche | 285/40ZR19Manufacturer claim · BMW |
Every figure is the car’s preferred, sourced value. “Best” marks the strongest value in a row, judged on the canonical measurement (so a winner is correct whichever unit system you view). Open a car to see each value’s source, original units, and alternates.
Community index
Add a value with its source. An editor verifies every submission against its citation before it appears on the site.
| FrontManufacturer claim · BMW |
| Induction type | TurbochargedManufacturer claim · Porsche | Twin-turboManufacturer claim · BMW |
|---|
| Redline | 7500Manufacturer claim · Porsche | — |
|---|
| Transmission type | Dual-clutch (PDK)Manufacturer claim · Porsche | Torque-converter automaticManufacturer claim · BMW |
|---|
| Number of gears | 8Manufacturer claim · Porsche | 8Manufacturer claim · BMW |
|---|
| 315 miCalculated |
| 342 miBestCalculated |
| Estimated range (highway)Higher is betterEstimated from tank capacity and quoted highway economy — not an instrumented range. | 382 miCalculated | 442 miBestCalculated |
|---|
| Estimated range (city)Higher is betterEstimated from tank capacity and quoted city economy — not an instrumented range. | 282 miCalculated | 302 miBestCalculated |
|---|