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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 | BMW2025 BMW M4 Competition xDrive Coupe | Porsche2025 Porsche 718 Cayman GTS 4.0 |
|---|---|---|
| Performance | ||
| Top speedHigher is better | 180 mphIndependent test · Car and Driver | 182 mphBestManufacturer claim · Porsche |
| 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. | 284.0 hp/tBestCalculated | 275.1 hp/tCalculated |
| Lateral accelerationHigher is betterSkidpad radius and surface affect results. | 1.02 gIndependent test · Car and Driver | 1.04 gBestIndependent test · Car and Driver |
| Acceleration | ||
| 0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers. | 2.80 sBestIndependent test · Car and Driver | 4.30 sManufacturer claim · Porsche |
| 0–100 km/hLower is better | 3.50 sBestManufacturer claim · BMW | 4.00 sIndependent test · Wikipedia |
| 0–100 mphLower is better | 6.90 sBestIndependent test · Car and Driver | 8.50 sIndependent test · Car and Driver |
| 0–200 km/hLower is better | 11.8 sBestIndependent test · auto motor und sport | 14.1 sManufacturer claim · Porsche |
| Quarter-mile elapsed timeLower is better | 11.00 sBestIndependent test · Car and Driver | |
| Braking | ||
| 70–0 mph braking distanceLower is better | 150.0 ftIndependent test · Car and Driver | 142.0 ftBestIndependent test · Car and Driver |
| 100–0 mph braking distanceLower is better | 302.0 ftIndependent test · Car and Driver | 284.0 ftBestIndependent test · Car and Driver |
| Engine & Powertrain | ||
| Peak powerHigher is better | 503 hpBestIndependent test · Car and Driver | 394 hpManufacturer claim · Porsche |
| Peak torqueHigher is better | 479 lb-ftBestIndependent test · Car and Driver | 309 lb-ftManufacturer claim · Porsche |
| Engine displacement | 2993.0 ccIndependent test · Wikipedia | 3995.0 ccManufacturer claim · Porsche |
| Cylinder count | 6Homologation · US EPA | 6Manufacturer claim · Porsche |
| Engine layout | Inline-6Independent test · Wikipedia | Flat-6Manufacturer claim · Porsche |
| Engine placement | FrontIndependent test · Wikipedia | |
| Dimensions | ||
| Length | 189 inIndependent test · Wikipedia | 172 inManufacturer claim · Porsche |
| Width | 74 inIndependent test · Wikipedia | 71 inManufacturer claim · Porsche |
| Height | 55 inIndependent test · Wikipedia | 50 inManufacturer claim · Porsche |
| Wheelbase | 112 inIndependent test · Wikipedia | 97 inManufacturer claim · Porsche |
| Weight | ||
| Curb weightLower is better | 3904 lbIndependent test · Car and Driver | 3157 lbBestManufacturer claim · Porsche |
| Fuel Economy | ||
| Fuel economy (combined)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 18.0 mpgHomologation · US EPA | 21.0 mpgBestHomologation · US EPA |
| Fuel economy (city)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 16.0 mpgHomologation · US EPA | 19.0 mpgBestHomologation · 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 mpgHomologation · US EPA | 24.0 mpgBestHomologation · US EPA |
| Fuel tank capacity | — | 16.9 galManufacturer claim · Porsche |
| Estimated range (combined)Estimated from tank capacity and quoted combined economy — not an instrumented range. | ||
| Practicality | ||
| Cargo volume | — | 5 ft³Manufacturer claim · Porsche |
| Seats | 4Independent test · Wikipedia | 2Homologation · US EPA |
| Pricing | ||
| Base price (as tested market)Demo prices only; not live FX. | $89,000Homologation · US EPA | $99,700Homologation · US EPA |
| Tires & Wheels | ||
| Front tire size | 275/35ZR-19Independent test · Car and Driver | 235/35 ZR20Manufacturer claim · Porsche |
| Rear tire size | 295/30ZR-20Independent test · Car and Driver | 265/35 ZR20Manufacturer claim · Porsche |
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.
| 12.50 sManufacturer claim · Porsche |
| Quarter-mile trap speed | 125.0 mphIndependent test · Car and Driver | — |
|---|
| MidManufacturer claim · Porsche |
| Induction type | Twin-turboIndependent test · Car and Driver | Naturally aspiratedManufacturer claim · Porsche |
|---|
| RedlineHigher is better | 7200Independent test · Wikipedia | 7800BestManufacturer claim · Porsche |
|---|
| Transmission type | Torque-converter automaticHomologation · US EPA | ManualManufacturer claim · Porsche |
|---|
| Number of gears | 8Homologation · US EPA | 6Manufacturer claim · Porsche |
|---|
| 355 miCalculated |
| Estimated range (highway)Estimated from tank capacity and quoted highway economy — not an instrumented range. | — | 406 miCalculated |
|---|
| Estimated range (city)Estimated from tank capacity and quoted city economy — not an instrumented range. | — | 321 miCalculated |
|---|