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Episode 09: BMW M3 UND M4 EXPLAINED.Episode 09: BMW M3 UND M4 EXPLAINED.

Episode 09: BMW M3 UND M4 EXPLAINED.

3 min reading time

The engine sound of the BMW M3 and M4.

BMW M developers Michael and Sebastian explain the M engine sound of the new BMW M3 and M4.

8 February 2021

The epitome of racing feeling in everyday traffic starts a new round. 35 years after the debut of the first BMW M3, BMW M GmbH presents the latest generation of its high-performance automobiles in the premium mid-size segment. Time to introduce the two new vehicles. In the #M3M4explained series, the developers have the floor.

Full force or very quietly: Michael and Sebastian listen very carefully when they are working out something new. The BMW M developers are responsible for the sound of the new BMW M3 and M4. In the video, they show important innovations and present the technology behind them – and which legendary engine they had in mind during development.

BMW M4 Competition Coupé:
CO2 emissions combined in g/km 223
Fuel consumption combined in l/100 km 9.9
EPISODE 09: BMW M3 AND M4 EXPLAINED – ENGINE SOUNDEPISODE 09: BMW M3 AND M4 EXPLAINED – ENGINE SOUND

EPISODE 09: BMW M3 AND M4 EXPLAINED – ENGINE SOUND

Start Video

BMW M ENTHUSIASTS ASK, BMW M EXPERTS ANSWER.

Back of a M4 Model.Back of a M4 Model.

Is there any fake sound through the speakers?

Michael: Fake sound? No! There is no V8 or V10 or whatever sound pattern included. However, the truly authentic inline-6-cylinder sound of our all-new 3-litre TwinTurbo is amplified in the interior.

Is it possible to get the M Performance exhaust with the standard tips configuration?

Sebastian: No, that is not possible.

Does the exhaust flap open at higher revs?

Sebastian: The valve control depends on load, rpm and speed. At wide open throttle and depending on revs the valves will open completely, ensuring maximum power output in all modes.

Stick in a BMW M3.Stick in a BMW M3.

Do Sport and Sport Plus make a difference regarding the sound on the outside?

Sebastian: Yes, exhaust sound is differentiated for each engine mode – "Efficient" / "Sport" / "Sport Plus".

Do the valves stay fully open in sport / spot plus mode at all RPMs, or are they RPM variable?

Sebastian: The exhaust valves will be opened gradually across the combined load / rpm range to create the best sound within the legal limitations.

I want to ask why you take 70 mm diameter pipe?

Sebastian: Exhaust piping diameter has been increased to allow for more exhaust gas flow in order to achieve the higher power output levels in the new generation BMW M3 / M4.

Stick shift in a BMW M4.Stick shift in a BMW M4.
Manual transmission or Competition model - the sound remains the same.
Exhaust of a BMW M Model.Exhaust of a BMW M Model.
The "sound godfather" of the new M3 and M4 automobiles was the M88 engine.

Besides the all-new M3 and M4, what is your favorite sounding M car?

Michael & Sebastian: That's the V10 powered M5 (E60/E61M).

How long have you been with BMW?

Sebastian: I joined BMW in 2009.
Michael: I've been working for BMW for nine years.

What did you two study?

Sebastian: Automotive Engineering.
Michael: Electrical Engineering with focus on acoustics.

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