BMW M5 CS vs Audi RS7 Sportback: Ultimate Battle of Super Sedans

In the world of high-performance luxury sedans, few rivalries are as intense and closely matched as the one between BMW’s M division and Audi’s RS lineup. Two of their most iconic contenders—the BMW M5 CS and the Audi RS7 Sportback—stand as shining examples of German engineering at its finest. But when these two titans go head-to-head, which one truly delivers the better experience?

Let’s dive deep into this battle of super sedans and explore every detail that separates these automotive beasts.

⚙️ 

Engine & Performance

At the heart of every performance car lies its engine—and both the M5 CS and RS7 pack serious power.

BMW M5 CS

The M5 CS is the most powerful M car ever produced. It boasts a 4.4-liter twin-turbocharged V8 producing a monstrous 627 horsepower and 553 lb-ft of torque. Power is channeled through an 8-speed automatic transmission to all four wheels via BMW’s xDrive AWD system, with the option to send power to the rear wheels only.

This setup allows the M5 CS to rocket from 0–60 mph in just 2.9 seconds, placing it in true supercar territory. It’s lighter than the standard M5 thanks to carbon fiber parts, and it’s been track-tuned to deliver razor-sharp handling.

Audi RS7 Sportback

Under the hood of the RS7 lies a 4.0-liter twin-turbo V8 producing 591 horsepower and 590 lb-ft of torque. Audi’s signature quattro AWD system ensures grip in all conditions, while an 8-speed Tiptronic transmission handles gear shifts smoothly.

The RS7 sprints from 0–60 mph in about 3.5 seconds, making it incredibly fast—but just a bit behind the M5 CS in raw acceleration.

Verdict:

The BMW M5 CS wins this round with quicker acceleration and a sharper, more aggressive performance tune. The RS7 remains a powerful and refined daily weapon, but not quite as brutal on the track.

️ 

Design & Interior

BMW M5 CS

Aggression defines the M5 CS from every angle. It features yellow Laserlight headlights, carbon fiber hood, unique bronze wheels, and a subtle ducktail spoiler. The look is muscular and menacing.

Inside, BMW didn’t hold back: you get carbon bucket seats front and rear, Alcantara trim, and exclusive badging. The rear seats are individual buckets—making this a strict four-seater. It’s a race car interior with luxury touches.

Audi RS7 Sportback

The RS7 strikes a more elegant pose. It’s wide, low, and sleek, with frameless doors, a sloping roofline, and matrix LED lights that enhance its futuristic look. It’s bold but more refined than the M5.

Inside, it’s pure Audi luxury. High-resolution touchscreens, Valcona leather seats, ambient lighting, and soft-touch materials dominate the cabin. Unlike the M5 CS, it seats five comfortably and feels more like a grand tourer.

Verdict:

The RS7 takes this round with a more luxurious and versatile interior, while the M5 CS sacrifices comfort for performance.

Technology & Driving Experience

BMW M5 CS

You’ll find BMW’s latest iDrive 7 system, a crisp digital instrument cluster, and all the expected driver assists. But make no mistake: the tech is secondary to the pure driver engagement. The chassis tuning is sharp, the steering communicative, and every input feels like it’s wired directly to your brain.

Audi RS7 Sportback

Audi shines with its MMI dual-touchscreen setup, virtual cockpit, and driver assistance tech. The adaptive air suspension offers multiple drive modes, letting you cruise in comfort or attack corners with confidence. It’s polished, smooth, and loaded with convenience.

Verdict:

For daily tech and comfort, the RS7 wins. For track-level excitement, the M5 CS is unmatched.

Price & Value

• BMW M5 CS: Starts around $142,000 USD
• Audi RS7 Sportback: Starts around $125,000 USD

The RS7 is significantly cheaper and comes better equipped out of the box. Meanwhile, the M5 CS is a limited-edition model, making it more exclusive—and likely to appreciate in value over time.

Verdict:

If exclusivity and performance are your priorities, the M5 CS is worth the premium. But for a better luxury-to-price ratio, the RS7 offers more.

Final Verdict: Which One Wins?

Conclusion:

If you’re after a raw, track-bred monster in sedan form, the BMW M5 CS is the clear choice. It’s an adrenaline machine with few compromises—built for purists.

But if your goal is to enjoy supercar performance with luxury, comfort, and daily usability, the Audi RS7 Sportback is hard to beat.

Whichever you choose, you’re driving one of the finest performance sedans ever made.

Related Posts

• BMW M Performance vs Audi RS: Which One Truly Wins?
• Why the Mercedes-AMG E63 S Is a Sedan That Scares Supercars
• Top 10 Used Cars That Deliver Serious Speed Under $40,000