BMW has a rich history of building great cars, but some might argue it has an even richer history of building great engines. It may never have built a production V6, but when it comes to V8s, the German automaker is one of the best. And where other rivals are dropping V8s for six- and even four-cylinder performance cars, BMW continues to rely on the V8 in various forms, with and without electrification. But which V8-powered BMW model is the most powerful in its arsenal?
The answer isn’t entirely straightforward, as a quick search points to the BMW XM Label as BMW’s most powerful V8 model. While that’s true from a total output perspective (738 horsepower), the V8 on its own only produces 577 hp. There are more than a dozen cars with BMW V8s producing more than that, not all of them wearing BMW badges either. In fact, three of the five most powerful BMW V8-powered cars (without plug-in hybrid assistance) wear Land Rover badges. But they aren’t the most powerful… The one that is still wears a BMW badge, but it’s not the model you might think. It’s not even an M car. That’s because it’s the Alpina XB7.
For the purposes of this article, we’ve excluded plug-in hybrids which augment the V8 engine significantly with electric motors. This excludes the BMW XM and the new M5.
BMW’s Most Powerful Non-Hybrid V8 Model
Alpina is a wholly-owned BMW subsidiary, but its future remains unclear at this stage. The Alpina B7 has been discontinued, but for the time being, the XB7 lives on, facelifted for the 2023 model year in accordance with the updates made to the regular X7 SUV. During that facelift, Alpina tweaked the 4.4-liter twin-turbo V8 engine to deliver 631 horsepower and 590 lb-ft of torque, more than any other BMW model produces from its V8 engine alone. That’s even more power than the 2022 BMW M5 CS, which made 627 hp and 553 lb-ft – outputs that made it the most powerful BMW production car ever when it was revealed in early 2021.
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2025 BMW Alpina XB7 Specs |
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|---|---|
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Engine |
BMW S68T0 |
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Engine Configuration |
4.4-Liter Twin-Turbo V8 |
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Horsepower |
631 hp @ 5,600-6,500 rpm |
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Torque |
590 lb-ft @ 1,800-5,600 rpm |
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Transmission |
8-Speed ZF Automatic |
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0-60 MPH |
3.9 Seconds |
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Top Speed |
180 mph |
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BMW S68 V8 Is The Latest In A Long Line Of Beastly BMW V8s
For nearly two decades, BMW has relied on the N63 family of V8 engines for most of its top models, with the M-tuned S63 joining later and finding wide use in a variety of models. But the need for progress means standing still is as good as going backward. With impending Euro7 emissions legislation forcing automakers to keep their high-power engines efficient in a number of ways, BMW introduced the S68 engine in 2022, first appearing in the facelifted X7 M60i. It’s subsequently found its way into more BMW variants including:
- BMW 760i xDrive (G70)
- BMW XM (G09)
- BMW X5 M60i (G05)
- BMW M5 and M5 Touring (G90/G99)
- BMW X6 M Competition (F96)
An evolution of the N63/S63, it maintains the 4.4-liter displacement and hot-vee configuration. But this V8 is geared towards hybridization, with all models featuring at least mild-hybrid assistance from a 48-volt system. At most, however, an electric motor and a plug-in hybrid system add as much as 197 hp to the mix. In both instances, the e-motors are mounted inside the eight-speed automatic transmission.
The Next Most Powerful BMW V8-Powered Cars
In digging through the archives of BMW V8-powered models, we didn’t expect the Alpina XB7 – an SUV favoring luxury over outright performance and dynamism – to come out tops. It’s only by a few horsepower that it does, though, and in Europe, the XB7 actually has less horsepower than other BMW V8-powered machines. Aside from the XB7, however, there are a few very powerful models with BMW V8 engines:
2022 BMW M5 CS – 627 hp
Labeled the most powerful production BMW ever when it launched, the 2022 M5 CS was the swansong for the F90 generation M5. It utilized the S63 motor to produce its 627 hp at 6,000 rpm, pairing that with 553 lb-ft of torque.
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Sent through the M xDrive all-wheel drive system, the M5 CS was capable of a 0-60 mph sprint of 2.9 seconds and a top speed of 190 mph courtesy of the standard M Driver’s Package. The CS nomenclature also endowed the super-sedan with enhanced suspension, a lowered ride height, and revised control systems to make it arguably one of the greatest iterations of the M5 ever made.
2024 Range Rover Sport SV – 626 hp
Surprise, surprise. The third most powerful BMW V8-powered car without hybrid assistance isn’t a BMW, it’s a Land Rover. Specifically, it’s the Range Rover Sport SV, which shocked us all last year when it was unveiled with a BMW M-spec V8 with nearly the same output as the M5 CS and more than any other M model. The engine in question is the same S68 4.4-liter twin-turbo V8 as used in the Alpina XB7, and its 626 hp and 553 lb-ft are enough to motivate the Range Rover Sport SV to hit 60 mph from a standstill in 3.6 seconds. It’ll run into its electronic speed limiter at 180 mph. Despite being a hefty SUV, it handles its weight well enough courtesy of Land Rover’s advanced 6D Dynamics suspension, using the 48-volt system to power an anti-roll system negating the need for traditional anti-roll bars.
2025 Land Rover Defender OCTA – 626 hp
Range Rover Sport has traditionally been the vessel of high-powered V8s, but the Land Rover Defender? Not so much. That changed this year when Land Rover introduced a new range-topping variant called the Defender OCTA, aiming to blend performance, luxury, and off-road prowess into a single model. Powering Land Rover’s rival to the Mercedes-AMG G63 is the same S68 V8 engine as the Range Rover Sport SV above, in an identical state of tune.
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That means peak outputs of 626 hp – 133 hp more than the old supercharged V8 could ever muster – and 553 lb-ft. However, owing to its duality of purpose, it’s slower to 60 mph (3.8 seconds) and tops out at just 155 mph, limited by virtue of its all-season tires. But unlike the Range Rover Sport SV, the Defender OCTA is a truly capable off-roader, with a low-range transfer case and a 1.1-inch raised ride height over a standard Defender.
