2018 Porsche 718 Cayman vs. 2018 BMW M4

The 2018 BMW M4 is a joy to drive and delivers as a comfortable performance vehicle. The 2018 Porsche 718 Cayman however is real dynamite, with a breathtaking exterior, elegant interior, and world-class performance. So which is the better deal?

Design & Style

The BMW M4 is a real beauty, with its well-balanced chassis and sleek exterior. However, the rear seat has been described by some as being too cramped while others feel the vehicle is heavier than it should be for a convertible. The Porsche 718 Cayman has a design which is typical of Porsche, which is the precise problem; it doesn’t do enough to distinguish itself from its predecessors. The BMW M4 does, so it wins in the design department.

Technology & Safety

The Porsche 718 has better fuel economy than the BMW M4, at 21 mpg versus only 17 mpg. The BMW however has twice the seating capacity, able to carry four passengers versus only two for the Porsche 718. This means the BMW M4 will be more attractive to families. The infotainment in both vehicles is similar; neither has a significant advantage in this area. Each vehicle uses a 4 wheel drive anti-brake system with rack pinion steering, but the BMW weighs considerably more than the Porsche at 3,530 pounds versus 2943 pounds for the Porsche. Both vehicles incorporate aluminum into their wheels, but the aluminum used by the BMW is forged.


Due to the fact that the BMW weighs more and carries twice as many passengers, you’d think this would compromise its performance, but it doesn’t. It has a whopping 425 horsepower at 5500 rpm versus only 300 horsepower at 6500 rpm for the Porsche 718. The BMW houses at Premium Unleaded I-6 Twin Turbo engine, while the Porsche 718 uses the Turbo Premium Intercooled H-4 Unleaded engine. Both vehicles use a fuel system which is direct gasoline injection, and the BMW has higher torque than its Porsche counterpart.

The Bottom Line

The BMW seats more passengers and has higher performance, but it also has a much higher price tag. Those looking to buy it will need to shell out almost $70,000, while those opting for the Porsche 718 will only have to pay just over $55,000; this is a difference of almost $15,000. A lot of people who are considering one of these cars won’t care much about seating capacity, because if they did they would look at crossover SUVs. What buyers of these cars do prioritize is performance, and with the Porsche 718 you get great performance for a price that is substantially lower than the BMW, so the Porsche 718 wins.

Ready to Schedule a Porsche 911 718 Cayman Test Drive Today?

If you are interested in experiencing the luxury package that the 2018 Porsche 718 Cayman offers, you can test drive this stellar car with us at Porsche of Princeton. We are located in Princeton New Jersey and proudly serve car buyers in the Tri-State area. Drop by our showroom today or simply call us in advance to book a Porsche 718 Cayman test drive appointment.

Porsche Princeton 40.2949476, -74.6829876.