Checking my BMW M340i 0-100 km/h time using Dragy GPS performance meter

For the tests, I had set the tyre pressure lower than the recommended figures & also got 100 octane fuel.

BHPian karan561 recently shared this with other enthusiasts.

This month last year (10th March 2021) BMW M340i was launched & at the launch, BMW India said it was the Fastest Accelerating Car Made in India with a factory quoted 0-100 Km/h time of 4.4 secs. However, as an owner, I always felt the car to be faster & recently got the opportunity to finally test how fast my car actually is & to conduct this test a DRAGY Device was used, which is a GPS-based performance meter known to be dependably accurate & widely used by enthusiasts globally. Though I did many runs during the tests, here are my 3 best runs from that night.

Results

Run No. 1

^ 4.34 Secs

Run No. 2

^ 4.27 Secs

Run No. 3

^ 4.21 Secs

Factors leading to the above times

• Weather conditions

I conducted these tests in late February when the sweet winter in this part of India was over. Also, if you see this Performance Report of my best time, which is a screenshot from the Dragy app, it reads the ambient temperature as 26-degree Celcius, implying that on a cooler day/night better times can be achieved, easily.

• Fuel level/grade

I usually use 95 Octane petrol and for this test, I wanted to use 100 Octane but unfortunately when I reached the fuel pump which stocks 100 Octane, that time I already had about a quarter of a tank of 95, added INR 3000 of XP100. Hence, when this test was conducted with the kind of fuel level I had, I believe the final octane value would be around 97 or 98. Also, as shown in the above screenshot, the fuel level was just under half during the tests.

• Tyre pressure

My car is running a tubeless Michelin PS4S setup & it's important to note that the tyre pressure for this test was set lower than the factory recommended pressure. Also, this being a rear-biased xDrive, I set 1 psi less at the rear to obtain better traction at launch.

Can a faster time be achieved

YES. It would be fair to say that if these tests were conducted during winters when the ambient temperatures at night were around 16-degree Celcius, with pure 100 Octane fuel & the fuel level in reserve then a faster time could have been achieved easily. To conclude things, it's another proof that BMW underquotes its performance figures for reasons best known to them, not that I'm complaining.

Here's what BHPian drjaygoyal had to say about the matter:

DAMN, THAT’S FAST.

Insane. You must have really enjoyed yourself.

You used launch control?

Here's what BHPian Vik0728 had to say about the matter:

This is just insane. If you are looking at shaving off even 2/10th of seconds, you are entering a proper Super/Sportscar territory, buddy. And all this in a mainstream performance car!

BMW is still my Dream Machine and if I ever won a lottery to afford some exotic machines, BMW 530D and M3/M340i will surely be part of my fleet.

Here's what BHPian JoshMachine had to say about the matter:

In your view, can the tarmac/asphalt/track surface quality also be an important factor here?

Grip levels during the initial take-off and subsequent in-line acceleration could vary from one surface to another.

The experiences of driving on a cement vs a black asphalt top are vastly different even on sub-100 kmph runs, usually.

Check out BHPian comments for more insights and information.