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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 430i Convertible | Porsche2025 Porsche 718 Boxster |
|---|---|---|
| Performance | ||
| Top speedHigher is better | 155 mphIndependent test · Wikipedia | 171 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. | 142.5 hp/tCalculated | 219.0 hp/tBestCalculated |
| Lateral accelerationSkidpad radius and surface affect results. | — | 1.01 gIndependent test · Car and Driver |
| Acceleration | ||
| 0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers. | 6.00 sManufacturer claim · BMW | 4.70 sBestManufacturer claim · Porsche |
| 0–100 km/hLower is better | 6.40 sIndependent test · Wikipedia | 4.90 sBestIndependent test · Wikipedia |
| 0–100 mph | — | 10.60 sIndependent test · Car and Driver |
| 0–200 km/h | — | 18.1 sManufacturer claim · Porsche |
| Quarter-mile elapsed time | — | 13.20 sManufacturer claim · Porsche |
| Braking | ||
| 70–0 mph braking distance | — | 145.0 ftIndependent test · Car and Driver |
| Engine & Powertrain | ||
| Peak powerHigher is better | 255 hpIndependent test · Wikipedia | 300 hpBestManufacturer claim · Porsche |
| Peak torqueHigher is better | 294 lb-ftBestIndependent test · Wikipedia | 280 lb-ftManufacturer claim · Porsche |
| Engine displacement | 2000.0 ccHomologation · US EPA | 1988.0 ccManufacturer claim · Porsche |
| Cylinder count | 4Homologation · US EPA | 4Manufacturer claim · Porsche |
| Engine layout | Inline-4Independent test · Wikipedia | Flat-4Manufacturer claim · Porsche |
| Engine placement | FrontIndependent test · Wikipedia | |
| Dimensions | ||
| Length | 188 inIndependent test · Wikipedia | 172 inIndependent test · Wikipedia |
| Width | 73 inIndependent test · Wikipedia | 71 inIndependent test · Wikipedia |
| Height | 54 inIndependent test · Wikipedia | 50 inIndependent test · Wikipedia |
| Wheelbase | 112 inIndependent test · Wikipedia | 97 inIndependent test · Wikipedia |
| Weight | ||
| Curb weightLower is better | 3946 lbIndependent test · Wikipedia | 3020 lbBestIndependent test · Wikipedia |
| Fuel Economy | ||
| Fuel economy (combined)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 30.0 mpgBestHomologation · US EPA | 24.0 mpgHomologation · US EPA |
| Fuel economy (city)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 27.0 mpgBestHomologation · US EPA | 21.0 mpgHomologation · US EPA |
| Fuel economy (highway)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km. | 35.0 mpgBestHomologation · US EPA | 27.0 mpgHomologation · US EPA |
| Fuel tank capacity | 15.6 galHomologation · US EPA | 14.3 galManufacturer claim · Porsche |
| Estimated range (combined)Higher is betterEstimated from tank capacity and quoted combined economy — not an instrumented range. | ||
| Practicality | ||
| Cargo volume | 9 ft³Homologation · US EPA | — |
| Seats | 4Homologation · US EPA | 2Homologation · US EPA |
| Pricing | ||
| Base price (as tested market)Demo prices only; not live FX. | $59,150Homologation · US EPA | $74,900Homologation · US EPA |
| Tires & Wheels | ||
| Front tire size | — | 235/45 ZR18Manufacturer claim · Porsche |
| Rear tire size | — | 265/45 ZR18Manufacturer 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.
| Induction type | TurbochargedHomologation · US EPA | TurbochargedManufacturer claim · Porsche |
|---|
| Redline | — | 7500Manufacturer claim · Porsche |
|---|
| Transmission type | Torque-converter automaticHomologation · US EPA | ManualManufacturer claim · Porsche |
|---|
| Number of gears | 8Homologation · US EPA | 6Manufacturer claim · Porsche |
|---|
| 342 miCalculated |
| Estimated range (highway)Higher is betterEstimated from tank capacity and quoted highway economy — not an instrumented range. | 546 miBestCalculated | 385 miCalculated |
|---|
| Estimated range (city)Higher is betterEstimated from tank capacity and quoted city economy — not an instrumented range. | 421 miBestCalculated | 300 miCalculated |
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