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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 | BMW2025 BMW X6 M Competition |
|---|---|---|
| Performance | ||
| Top speedHigher is better | 193 mphBestManufacturer claim · Bentley | 177 mphManufacturer claim · BMW |
| Power-to-weight ratioCalculated from peak power and curb weight — figures quoted against a different weight basis (e.g. dry or DIN) will differ. | — | 249.4 hp/tCalculated |
| Acceleration | ||
| 0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers. | 3.40 sBestManufacturer claim · Bentley | 3.70 sManufacturer claim · BMW |
| 0–100 km/hLower is better | 3.60 sBestManufacturer claim · Bentley | 3.90 sManufacturer claim · BMW |
| 0–200 km/h | — | 13.6 sManufacturer claim · BMW |
| Engine & Powertrain | ||
| Peak powerHigher is better | 641 hpBestManufacturer claim · Bentley | 617 hpManufacturer claim · BMW |
| Peak torqueHigher is better | 627 lb-ftBestManufacturer claim · Bentley | 553 lb-ftManufacturer claim · BMW |
| Engine displacement | 3996.0 ccManufacturer claim · Bentley | 4395.0 ccManufacturer claim · BMW |
| Cylinder count | 8Manufacturer claim · Bentley | 8Manufacturer claim · BMW |
| Engine layout | V8Manufacturer claim · Bentley | V8Manufacturer claim · BMW |
| Engine placement | — | Front |
| Dimensions | ||
| Length | 203 inManufacturer claim · Bentley | 195 inManufacturer claim · BMW |
| Width | — | 80 inManufacturer claim · BMW |
| Height | 68 inManufacturer claim · Bentley | 67 inManufacturer claim · BMW |
| Wheelbase | 118 inManufacturer claim · Bentley | 117 inManufacturer claim · BMW |
| Ground clearance | — | 8 inManufacturer claim · BMW |
| Weight | ||
| Curb weight | — | 5454 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. | 18.0 mpgBestManufacturer claim · Bentley | 15.0 mpgHomologation · US EPA |
| Fuel economy (city)Lower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | — | 13.0 mpgHomologation · US EPA |
| Fuel economy (highway)Lower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | — | 18.0 mpgHomologation · US EPA |
| Fuel tank capacity | 22.5 galManufacturer claim · Bentley | 21.9 galManufacturer claim · BMW |
| Estimated range (combined)Higher is betterEstimated from tank capacity and quoted combined economy — not an instrumented range. | 403 miBestCalculated | 329 miCalculated |
| Practicality | ||
| Cargo volumeHigher is better | 17 ft³Manufacturer claim · Bentley | 27 ft³BestManufacturer claim · BMW |
| Seats | — | 5Manufacturer claim · BMW |
| Pricing | ||
| Base price (as tested market)Demo prices only; not live FX. | — | $132,100Homologation · US EPA |
| Tires & Wheels | ||
| Front tire size | — | 295/35ZR21 (107Y)Manufacturer claim · BMW |
| Rear tire size | — | 315/30ZR22 (107Y)Manufacturer 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.
| Induction type | Twin-turboManufacturer claim · Bentley | Twin-turboManufacturer claim · BMW |
|---|
| Transmission type | — | Torque-converter automaticManufacturer claim · BMW |
|---|
| Number of gears | — | 8Manufacturer claim · BMW |
|---|
| Estimated range (highway)Estimated from tank capacity and quoted highway economy — not an instrumented range. | — | 394 miCalculated |
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| Estimated range (city)Estimated from tank capacity and quoted city economy — not an instrumented range. | — | 285 miCalculated |
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