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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 M440i xDrive Convertible | BMW2025 BMW M850i xDrive Convertible |
|---|---|---|
| Performance | ||
| Top speedHigher is better | 155 mphTieIndependent test · Car and Driver | 155 mphTieManufacturer 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. | — | 243.5 hp/tCalculated |
| Acceleration | ||
| 0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers. | 4.60 sManufacturer claim · BMW | 3.80 sBestManufacturer claim · BMW |
| 0–100 km/hLower is better | 4.90 sManufacturer claim · BMW | 3.90 sBestManufacturer claim · BMW |
| 0–100 mph | — | 8.30 sIndependent test · Car and Driver |
| 0–200 km/h | — | 13.5 sIndependent test · auto motor und sport |
| Braking | ||
| 70–0 mph braking distance | — | 151.0 ftIndependent test · Car and Driver |
| Engine & Powertrain | ||
| Peak powerHigher is better | 386 hpIndependent test · Car and Driver | 523 hpBestManufacturer claim · BMW |
| Peak torqueHigher is better | 398 lb-ftIndependent test · Car and Driver | 553 lb-ftBestManufacturer claim · BMW |
| Engine displacement | 3000.0 ccIndependent test · Wikipedia | 4395.0 ccManufacturer claim · BMW |
| Cylinder count | 6Homologation · US EPA | 8Manufacturer claim · BMW |
| Engine layout | Inline-6Independent test · Wikipedia | V8Manufacturer claim · BMW |
| Engine placement | FrontIndependent test · Wikipedia | |
| Dimensions | ||
| Length | 188 inIndependent test · Wikipedia | 191 inManufacturer claim · BMW |
| Width | 73 inIndependent test · Wikipedia | 75 inManufacturer claim · BMW |
| Height | — | 53 inManufacturer claim · BMW |
| Wheelbase | 112 inIndependent test · Wikipedia | 111 inManufacturer claim · BMW |
| Ground clearance | — | 5 inManufacturer claim · BMW |
| Weight | ||
| Curb weight | — | 4736 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. | 28.0 mpgBestHomologation · US EPA | 19.0 mpgHomologation · US EPA |
| Fuel economy (city)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 25.0 mpgBestHomologation · US EPA | 17.0 mpgHomologation · US EPA |
| Fuel economy (highway)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 32.0 mpgBestHomologation · US EPA | 24.0 mpgHomologation · US EPA |
| Fuel tank capacity | 15.6 galHomologation · US EPA | 18.0 galManufacturer claim · BMW |
| Estimated range (combined)Higher is betterEstimated from tank capacity and quoted combined economy — not an instrumented range. | ||
| Practicality | ||
| Cargo volume | — | 12 ft³Manufacturer claim · BMW |
| Seats | 4Homologation · US EPA | 4Manufacturer claim · BMW |
| Pricing | ||
| Base price (as tested market)Demo prices only; not live FX. | $74,850Homologation · US EPA | $117,000Homologation · US EPA |
| Tires & Wheels | ||
| Front tire size | — | 245/35R20 95Y XLManufacturer claim · BMW |
| Rear tire size | — | 275/30R20 97Y XLManufacturer 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 | TurbochargedHomologation · US EPA | Twin-turboManufacturer claim · BMW |
|---|
| Transmission type | Torque-converter automaticIndependent test · Wikipedia | Torque-converter automaticManufacturer claim · BMW |
|---|
| Number of gears | 8Independent test · Wikipedia | 8Manufacturer claim · BMW |
|---|
| 437 miBestCalculated |
| 342 miCalculated |
| Estimated range (highway)Higher is betterEstimated from tank capacity and quoted highway economy — not an instrumented range. | 499 miBestCalculated | 432 miCalculated |
|---|
| Estimated range (city)Higher is betterEstimated from tank capacity and quoted city economy — not an instrumented range. | 390 miBestCalculated | 306 miCalculated |
|---|