Top 7 BMW Automatic Transmissions Ranked – Which Ones Are the Best?
Image: BMW 3 Series Automatic Hybrid Gearbox (8HP75HZ) — 32k miles only, code 5A2DA26 — suitable for G20 models. £2,327.49 at mtautoparts.com
BMW has relied on several different automatic transmissions over the years, not just its own designs, but units supplied by ZF, Getrag, Aisin, GM and others. Some have become industry benchmarks, powering everything from family saloons to full-blown M cars. Others… well, they belong firmly in BMW’s past.
If you're buying a used BMW, assessing a gearbox failure, or choosing between models, knowing which transmissions shine and why can save you money and headaches later. Here’s a clear, real-world guide to the best automatic gearboxes BMW has ever used.
1. ZF 8HP – The Modern Benchmark
Found in almost every rear-wheel-drive BMW from 2011 onwards, the eight-speed ZF 8HP is often described as the best BMW automatic gearbox on sale today. It shifts quickly, it’s brilliantly smooth, and it handles everything from a 318d to a full-fat M550i with ease.
Why it stands out:
Virtually seamless upshifts
Lightning responses in sport modes
Excellent fuel efficiency
Works with petrol, diesel, hybrid and high-torque engines
ZF supplies this same transmission to Audi, Jaguar, Land Rover and even Rolls-Royce — a testament to how good it really is.
Verdict: Quite simply, the best automatic gearbox BMW has ever fitted.
2. Next-Generation ZF Hybrid-Ready 8HP
BMW’s plug-in hybrid and mild-hybrid models use a revised version of the 8HP that incorporates an electric motor directly into the transmission. It blends electric smoothness with traditional combustion power effortlessly.
Highlights:
Whisper-quiet take-off
Strong torque thanks to electric boost
As smooth as the standard 8HP
Future-proof design
Verdict: The transmission that will carry BMW through the next decade of electrification.
3. ZF 6HP – The Trusted Workhorse
Before the 8HP arrived, BMW leaned heavily on the six-speed ZF 6HP. Used throughout the 2000s, it remains a strong and durable unit, capable of big mileages when maintained properly.
Strengths:
Proven long-term reliability
Smooth enough for daily use
Handles higher torque than earlier BMW automatic gearboxes
It’s not as crisp or efficient as the 8HP, but it’s one of the most dependable gearboxes in older BMWs.
Verdict: Solid, reliable and ageing gracefully.
4. Getrag 7-Speed DCT – The Enthusiast’s Choice
BMW’s dual-clutch gearbox, supplied by Getrag, is fitted to several M cars, including the E92 M3, F82 M4, M2 and others. It’s aimed squarely at performance driving.
What it offers:
Extremely quick, engaging shifts
A direct, mechanical feel
Exceptional performance on track or spirited drives
The trade-off is that low-speed manoeuvring can feel a little abrupt, and heat management matters if you drive hard.
Verdict: Superb for drivers who want involvement, but not the smoothest around town.
5. Aisin 8-Speed – For BMW’s Front-Wheel-Drive Models
BMW’s front-wheel-drive cars, such as the 1 Series F40 and 2 Gran Coupe, use an Aisin eight-speed automatic BMW gearboxes rather than a ZF, simply because the layout demands a transverse gearbox.
Why it works well:
Reliable and well-proven (also used in Volvos, Mazdas and MINIs)
Smooth and efficient
Suits compact engines perfectly
Not as sharp as the ZF 8HP, but still a very competent transmission.
Verdict: The right tool for the job in BMW’s smaller front-drive range models.
6. GM 5L40 / 6L50 – Older BMW SUV and Diesel Gearboxes
During the early 2000s, BMW used several GM-built transmissions.
Good points:
Cheap to maintain
Widely available parts
Fine for relaxed driving
However, they lack the refinement, speed and efficiency of later ZF units.
Verdict: Acceptable on older models, but far from BMW’s best gearboxes, such as ZF 8HP and 6HP units. cc
7. BMW SMG – The Marmite Gearbox
The SMG (Sequential Manual Gearbox) appeared in older M models like the E46 M3 and E60 M5. It was essentially a manual gearbox with an automated clutch.
Why some love it:
Incredibly raw and engaging
Very “old-school M car” in character
Why some don’t:
Jerky in traffic
Known hydraulic issues
Now overshadowed by DCT and ZF autos
Verdict: A love-or-hate option. Great fun when driven hard, frustrating when driven slowly.
Final Verdict: Which BMW Automatic Is the Best?
Winner: ZF 8HP — by miles.
It’s the perfect all-rounder: refined, lightning quick, robust, efficient and capable of handling enormous torque. If you’re buying a used 3 Series or even a tuned M340i, the 8HP lifts the entire driving experience.
For performance drivers, the Getrag DCT still has a charm of its own, while hybrid owners will benefit from the latest electrified 8HP units. But across the board, nothing has shaped modern BMW driving like the ZF 8HP BMW automatic gearbox.
FAQs: BMW Automatic Transmissions
1. Which BMW automatic gearbox is the most reliable?
Most owners, specialists and reviewers agree the ZF 8HP is BMW’s most reliable and best all-round automatic gearbox.
2. Are BMW dual-clutch (DCT) transmissions good?
Yes, they’re excellent for performance driving, offering ultra-quick shifts. However, they can feel jerky at low speeds and aren’t as smooth as a ZF automatic for daily use.
3. Do BMW automatic gearboxes need servicing?
Despite BMW’s “lifetime fluid” claims, ZF itself recommend servicing every 60,000 miles. Regular fluid and filter changes significantly improve longevity.
4. Are Aisin automatics in BMWs reliable?
Yes. Aisin 8-speed gearboxes used in front-wheel-drive BMWs are reliable and widely used across other brands like Volvo and Mazda.
5. What’s the worst BMW automatic transmission?
Opinions vary, but many owners consider the older SMG units to be the least refined due to their jerky behaviour and known pump failures.
6. Can hybrid BMWs handle high torque with their new transmissions?
Yes. The latest hybrid-ready ZF 8HP is designed to cope with electric boost and high torque, making it just as capable as the standard ZF 8HP.
7. What’s the best gearbox for BMW enthusiasts?
For pure driving engagement, the Getrag 7-speed DCT remains the favourite among performance-focused BMW owners.
Disclaimer: This article is for general information only. Transmission performance and reliability vary by vehicle condition and maintenance history. Always seek professional advice before making repair or replacement decisions. BMW and all gearbox manufacturers mentioned are referenced for informational purposes only.
