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.
219.7 hp/tCalculated
278.4 hp/t✓ BestCalculated
Lateral accelerationHigher is betterSkidpad radius and surface affect results.
1.03 g✓ BestIndependent test · Car and Driver
1.00 gIndependent test · Car and Driver
Acceleration
0–60 mphLower is betterRollout (1ft) handling differs between testers and manufacturers.
4.70 sManufacturer claim · Porsche
4.10 s✓ BestIndependent test · Wikipedia
0–100 km/hLower is better
4.90 sIndependent test · Wikipedia
4.20 s✓ BestManufacturer claim · BMW
0–100 mphLower is better
10.50 sIndependent test · Car and Driver
8.50 s✓ BestIndependent test · Car and Driver
0–200 km/hLower is better
18.1 sManufacturer claim · Porsche
13.7 s✓ BestManufacturer claim · BMW
Quarter-mile elapsed time
13.20 sManufacturer claim · Porsche
—
Braking
70–0 mph braking distanceLower is better
141.0 ft✓ BestIndependent test · Car and Driver
153.0 ftIndependent test · Car and Driver
100–0 mph braking distance
—
308.0 ftIndependent test · Car and Driver
Engine & Powertrain
Peak powerHigher is better
300 hpManufacturer claim · Porsche
473 hp✓ BestManufacturer claim · BMW
Peak torqueHigher is better
280 lb-ftManufacturer claim · Porsche
406 lb-ft✓ BestIndependent test · Wikipedia
Engine displacement
1988.0 ccManufacturer claim · Porsche
2993.0 ccManufacturer claim · BMW
Cylinder count
4Manufacturer claim · Porsche
6Manufacturer claim · BMW
Engine layout
Flat-4Manufacturer claim · Porsche
Inline-6Manufacturer claim · BMW
Engine placement
MidManufacturer claim · Porsche
Front
Dimensions
Length
172 inManufacturer claim · Porsche
180 inManufacturer claim · BMW
Width
71 inManufacturer claim · Porsche
74 inManufacturer claim · BMW
Height
51 inManufacturer claim · Porsche
55 inManufacturer claim · BMW
Wheelbase
97 inManufacturer claim · Porsche
108 inManufacturer claim · BMW
Ground clearance
—
5 inManufacturer claim · BMW
Weight
Curb weightLower is better
3010 lb✓ BestManufacturer claim · Porsche
3745 lbIndependent 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.
24.0 mpg✓ BestHomologation · 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.
21.0 mpg✓ BestHomologation · US EPA
16.0 mpgHomologation · US EPA
Fuel economy (highway)Higher is betterLower L/100km is better; higher mpg is better — direction is on the canonical L/100km.
27.0 mpg✓ BestHomologation · US EPA
23.0 mpgHomologation · US EPA
Fuel tank capacity
14.3 galManufacturer claim · Porsche
13.7 galManufacturer claim · BMW
Estimated range (combined)Higher is betterEstimated from tank capacity and quoted combined economy — not an instrumented range.
Practicality
Seats
2Homologation · US EPA
4Manufacturer claim · BMW
Pricing
Base price (as tested market)Demo prices only; not live FX.
$72,800Homologation · US EPA
$64,900Manufacturer claim · BMW
Tires & Wheels
Front tire size
235/45 ZR18Manufacturer claim · Porsche
275/35 ZR19Manufacturer claim · BMW
Rear tire size
265/45 ZR18Manufacturer claim · Porsche
285/30 ZR20Manufacturer 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.
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