BMW M4 vs Porsche 718 Cayman (2025)
Price gap, MSRP
$6,900
- M4: 173 hp more, 5.8 cu ft more cargo.
- 718 Cayman: $6,900 cheaper, 5 mpg better.
- M4 wins 6 of 9 measures.
| Measure | M4 | 718 Cayman | Winner |
|---|---|---|---|
| MSRP | $79,700 | $72,800 | 718 Cayman |
| Horsepower | 473 hp | 300 hp | M4 |
| Torque | 406 lb-ft | 280 lb-ft | M4 |
| MPG combined | 19 mpg | 24 mpg | 718 Cayman |
| Cargo, max | 15.5 cu ft | 9.7 cu ft | M4 |
| Cargo, seats up | 12.0 cu ft | N/A | N/A |
| Rear legroom | 34.7 in | N/A | N/A |
| Front legroom | 41.7 in | N/A | N/A |
| Length | 189.1 in | 172.4 in | Not scored |
| Width | 74.3 in | 70.9 in | Not scored |
| Curb weight | 3,830 lb | 3,104 lb | Not scored |
| Seats | 4 | 2 | M4 |
| Ground clearance | 4.7 in | 4.0 in | M4 |
| 0-60 mph | 4.1 s estimate | 4.7 s tested | M4 |
| 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
| Trim | Nearest in price | Gap |
|---|---|---|
| M4 Coupe RWD $79,700 | 718 Cayman Style Edition RWD $79,200 | $500 |
| 718 Cayman RWD $72,800 | M4 Base Style RWD $79,700 | $6,900 |
Cost to run
718 Cayman costs $9,426 less over 6 years.
12,000 miles a year. Gas $3.20. Electricity 17 cents per kWh.
| Cost | M4 | 718 Cayman |
|---|---|---|
| MSRP | $79,700 | $72,800 |
| Fuel or charging, 1 year | $2,021 | $1,600 |
| Fuel or charging, 6 years | $12,126 | $9,600 |
| Total, 6 years | $91,826 | $82,400 |
Which is better for me?
Weight each group from 0 to 10. MPG uses fuel or charging cost.
Equal weights: M4 wins.
No single weight change flips the winner.
| Group | Ahead | By |
|---|---|---|
| Price | 718 Cayman | 9% |
| MPG | 718 Cayman | 21% |
| Power | M4 | 37% |
| Space | M4 | 37% |
| Towing | N/A |
Other years
What this cannot tell you
Your price and mpg will differ.
Reliability and safety are not included.
- 2 or more sources
- 1 source
- Model-level, rule or estimate
- Sources disagree