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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 | Bentley2026 Bentley Bentayga Speed | Porsche2025 Porsche Cayenne Turbo GT |
|---|---|---|
| Performance | ||
| Top speedHigher is better | 193 mphBestManufacturer claim · Bentley | 189 mphManufacturer claim · Porsche |
| Power-to-weight ratioCalculated from peak power and curb weight — figures quoted against a different weight basis (e.g. dry or DIN) will differ. | — | 283.5 hp/tCalculated |
| Lateral accelerationSkidpad radius and surface affect results. | — | 1.04 gIndependent test · MotorTrend |
| Acceleration | ||
| 0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers. | 3.40 sManufacturer claim · Bentley | 3.10 sBestManufacturer claim · Porsche |
| 0–100 km/hLower is better | 3.60 sManufacturer claim · Bentley | 3.30 sBestManufacturer claim · Porsche |
| 0–100 mph | — | 7.41 sIndependent test · MotorTrend |
| 0–200 km/h | — | 12.1 sManufacturer claim · Porsche |
| Quarter-mile elapsed time | — | 11.60 sManufacturer claim · Porsche |
| Braking | ||
| 60–0 mph braking distance | — | 99.0 ftIndependent test · MotorTrend |
| 70–0 mph braking distance | — | 151.0 ftIndependent test · Car and Driver |
| 100–0 mph braking distance | — | 301.0 ftIndependent test · Car and Driver |
| Engine & Powertrain | ||
| Peak powerHigher is better | 641 hpManufacturer claim · Bentley | 650 hpBestManufacturer claim · Porsche |
| Peak torqueHigher is better | 627 lb-ftBestManufacturer claim · Bentley | 626 lb-ftManufacturer claim · Porsche |
| Engine displacement | 3996.0 ccManufacturer claim · Bentley | 4000.0 ccManufacturer claim · Porsche |
| Cylinder count | 8Manufacturer claim · Bentley | 8Manufacturer claim · Porsche |
| Engine layout | V8Manufacturer claim · Bentley | V8Manufacturer claim · Porsche |
| Engine placement | — | |
| Dimensions | ||
| Length | 203 inManufacturer claim · Bentley | 194 inManufacturer claim · Porsche |
| Width | — | 79 inManufacturer claim · Porsche |
| Height | 68 inManufacturer claim · Bentley | 65 inManufacturer claim · Porsche |
| Wheelbase | 118 inManufacturer claim · Bentley | 114 inManufacturer claim · Porsche |
| Weight | ||
| Curb weight | — | 5055 lbManufacturer 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 mpgBestManufacturer claim · Bentley | 17.0 mpgHomologation · US EPA |
| Fuel economy (city)Lower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | — | 15.0 mpgHomologation · US EPA |
| Fuel economy (highway)Lower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | — | 20.0 mpgHomologation · US EPA |
| Fuel tank capacity | 22.5 galManufacturer claim · Bentley | 23.7 galManufacturer claim · Porsche |
| Estimated range (combined)Higher is betterEstimated from tank capacity and quoted combined economy — not an instrumented range. | 403 miBestCalculated | 403 mi |
| Practicality | ||
| Cargo volumeHigher is better | 17 ft³Manufacturer claim · Bentley | 24 ft³BestManufacturer claim · Porsche |
| Seats | — | 5Manufacturer claim · Porsche |
| Pricing | ||
| Base price (as tested market)Demo prices only; not live FX. | — | $203,800Homologation · US EPA |
| Aerodynamics | ||
| Drag coefficient (Cd) | — | 0.37 :1Manufacturer claim · Porsche |
| Tires & Wheels | ||
| Front tire size | — | 285/40 ZR22Manufacturer claim · Porsche |
| Rear tire size | — | 315/35 ZR22Manufacturer 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.
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Add a value with its source. An editor verifies every submission against its citation before it appears on the site.
| Induction type | Twin-turboManufacturer claim · Bentley | Twin-turboManufacturer claim · Porsche |
|---|
| Redline | — | 6800Manufacturer claim · Porsche |
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| Transmission type | — | Torque-converter automaticManufacturer claim · Porsche |
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| Number of gears | — | 8Manufacturer claim · Porsche |
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| Estimated range (highway)Estimated from tank capacity and quoted highway economy — not an instrumented range. | — | 474 miCalculated |
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| Estimated range (city)Estimated from tank capacity and quoted city economy — not an instrumented range. | — | 356 miCalculated |
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