BMW M8 vs Porsche 911 (2025)

Price gap, MSRP + destination

$18,255

Scored measures. Each is scaled to the larger value. Bold: the winner.

M8 Competition Coupe AWD vs Porsche 911 Carrera RWD
Measure	M8	Porsche 911	Winner
MSRP + destination	$140,350	$122,095	Porsche 911
Horsepower	617 hp	388 hp	M8
Torque	553 lb-ft	331 lb-ft	M8
MPG combined	17 mpg	21 mpg	Porsche 911
Cargo, max	N/A	4.8 cu ft	N/A
Cargo, seats up	14.8 cu ft	N/A	N/A
Rear legroom	29.5 in	N/A	N/A
Front legroom	42.1 in	N/A	N/A
Length	191.3 in	178.8 in	Not scored
Width	74.9 in	72.8 in	Not scored
Curb weight	4,295 lb	3,342 lb	Not scored
Seats	4	4	About the same
Ground clearance	4.8 in to 5.0 in	N/A	N/A
0-60 mph	3.3 s estimate	3.9 s tested	M8
Basic warranty	4 yr / 50,000 mi	4 yr / 50,000 mi	About the same

Not scored: length, width, curb weight. N/A rows are not counted.

Nearest trims by price

Each trim and the rival trim nearest in MSRP
Trim	Nearest in price	Gap
M8 Competition Coupe AWD $138,800	Porsche 911 Carrera T Coupe RWD $134,000	$4,800
Porsche 911 Carrera RWD $120,100	M8 Competition Coupe AWD $138,800	$18,700

Miles a yearGas, $ per gallonElectricity, cents per kWhYears

Porsche 911 costs $20,837 less over 6 years.

12,000 miles a year. Gas $3.20. Electricity 17 cents per kWh.

Weight each group from 0 to 10. MPG uses fuel or charging cost.

Price 5MPG 5Power 5Space 5Towing 5

Equal weights: M8 wins.

Porsche 911 wins if Power weight is 4 or less.

Your price and mpg will differ.

Reliability and safety are not included.