One has more power, the other is lighter, so which one takes the cake?

Out of the two German sports cars, the 718 Cayman GT4 is perhaps the more track-focused animal. However, the BMW M4 in Competition trim showed that it is no pushover.

This Shootout Between the BMW M4 and Porsche Cayman GT4 is Epic
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Looking at these two go-fasters strictly from the spec sheet standpoint, it’s quite hard not to spot both the similarities and the differences.

For example, they’re both powered by six-cylinder engines of different ilk. The Cayman GT4 has a 4.0-liter, naturally-aspirated flat-six mounted in the middle and good for 414 horsepower at 7,600 rpm and 309 pound-feet of twist at 5,000 rpm. The rev limited kicks in late, at 8,100 rpm, and torque hits the ground through the rear wheels via a six-speed manual.

This Shootout Between the BMW M4 and Porsche Cayman GT4 is Epic
- image 981772

On the other side of the ring, the BMW M4 Competition is motivated by a straight-six, 3.0-liter mill aided by turbocharging to produce a hefty 503 horsepower and 479 pound-feet of torque spread between 2,750 and 5,500 rpm. Power gets down through an eight-speed automatic.

Then there’s the weight gap. The BMW M4 Competition is about 600 pounds heavier than the Cayman GT4, which makes it slower around a corner. It’s obviously faster in a straight line but it can’t match the GT4’s corner-carving ability and superior handling.

This Shootout Between the BMW M4 and Porsche Cayman GT4 is Epic
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That’s why when it comes to lap times at Castle Combe circuit – that’s where Fifth Gear instrumented the comparison, the Porsche comes out on top with 1:12.6, while the M4 trails behind by almost a full second with 1:13.3.

Of course, these two being sports cars, there’s also the element of fun that matters a lot. It’s hard to judge that from behind a screen without driving the two, but the video below has some interesting conclusions. Plus, just look at the hosts’ faces as they push the two cars on the track. They basically tell the whole story.

Tudor Rus
Tudor Rus
Assistant Content Manager - Automotive Expert - tudor@topspeed.com
Tudor’s first encounter with cars took place when he was only a child. Back then, his father brought home a Trabant 601 Kombi and a few years later, a Wartburg 353. At that time, he was too young to know how they worked and way too young to drive them, but he could see one thing – each of them had a different ethos and their own unique personality. As time went on, he started seeing that in other cars as well, and his love for the automobile was born.  Read full bio
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