[igelkotten82]

The interesting part of this thread is to discuss if all Lci models have the same lack of performance from 0-60mph or if its just one car. Since it seems to be a general problem of all cars I enjoy to discuss the reason behind it and try to find out different reasons of why it is the way it is. To discuss if 4.1 seconds or 3.8 seconds is fast enough is totally uninteresting and pointless.

I got my summer tires on yesterday and did a start in comfort setting while filming the sport display to be able analyze it. When watching it I realize the turbo pressure is going up extremely slowly when the car is accelerating threw the gears. In first gear it gets up to about 0,4 bar and in second gear it continues up to 0,8 bar before shifting into third gear where the pressure stays at 1.0 to 1.1 bar. But when driving in second gear from about 20mph and making a kick down the turbo pressure builds up much faster.
Will try it again in sports mode and launch control and eventually get a dragy to get the real numbers. Uploaded the short clip on instagram from todays test.
https://www.instagram.com/p/CN-191RB..._web_copy_link

[Karnidge]

Originally Posted by DB_BMW

Id be happier if it was 3.8 secs. Look at the times people posted, i haven't seen anyone get below 4s. Thats .5 secs away, which is a lot. Also Can you post the link where car and driver achieved 3.8 secs?


Here is a quote straight from the article Car and Driver article i read:

"We couldn't quite match BMW's claimed zero-to-60 time of 3.6 seconds. Our 5287-mile test car did the 60 run in 4.1 seconds and sailed through the quarter in 12.3 seconds at 120 mph. "


https://www.caranddriver.com/reviews...y-the-numbers/

Sure, here you go...

"Acceleration numbers are equally impressive. We recorded a zero-to-60-mph time of just 3.8 seconds, 0.7 second quicker than the already brisk BMW 540i xDrive."

https://www.caranddriver.com/reviews...e-test-review/

[beerman80]

Originally Posted by Karnidge

Sure, here you go...

"Acceleration numbers are equally impressive. We recorded a zero-to-60-mph time of just 3.8 seconds, 0.7 second quicker than the already brisk BMW 540i xDrive."

https://www.caranddriver.com/reviews/a15078919/2018-bmw-m550i-xdrive-test-review/

I think you are still missing the point of this thread guy. What you posted is for a 2018 M550i, not the 2021 LCI, which is what this thread is about. The 2021 models aren't coming close to what BMW states their 0-60 should be.

[IDBGOD]

This thread intrigues me as I have a late Feb build 2021 LCI M550 I’ve had about a month. Car is quick for sure but I don’t have any kind of speed recording 0-60 device or app. Interesting it’s producing a slower 0-60 time with the same engine that’s in the M850 X5M50 etc with the increased hp/tq over pre LCI.

Did they limit the power to the low gears or what? Is launched gimped, new software holding it back? Doesn’t make any sense. I would highly doubt BMW’s global marketing team would make such an error to advertise 3.6 when in reality it’s 4.1 and slower then pre LCI with less power. If anything, historically they are advertised or under, not slower and certainly not slower then a heavier SUV (X5 M50). So the question is, is this an isolated occurrence to just a few vehicles, or is it the entire 2021 M550 product line?

I suppose we will find out soon enough once the new tuners come out with something for the new LCI as I’m not seeing any new tunes available either for 2021 model years. Guess all we can do is hang tight until we have more data

[Cabbage]

I have a feeling that this would get fixed for the 2022 model and makes us 2021 owners feel ripped off.

[igelkotten82]

Originally Posted by Karnidge

Sure, here you go...

"Acceleration numbers are equally impressive. We recorded a zero-to-60-mph time of just 3.8 seconds, 0.7 second quicker than the already brisk BMW 540i xDrive."

https://www.caranddriver.com/reviews...e-test-review/

You just highlighted the problem this thread is all about!
The car with 456 horsepower accelerates from 0-60mph in 3.8 seconds in 2018.
The lci model with 523 horsepower (67 more horsepower) accelerates from 0-60mph in over 4 seconds in 2021.

Has anyone else made any reclaims to Bmw besides DB_BMW and have they came back to you about the lack of performance (besides the problem you seem to have with the idrive)?

If they change it for the 2022 model I hope they will make an update for the 21 model cars.

[Cabbage]

Originally Posted by igelkotten82

You just highlighted the problem this thread is all about!
The car with 456 horsepower accelerates from 0-60mph in 3.8 seconds in 2018.
The lci model with 523 horsepower (67 more horsepower) accelerates from 0-60mph in over 4 seconds in 2021.

Has anyone else made any reclaims to Bmw besides DB_BMW and have they came back to you about the lack of performance (besides the problem you seem to have with the idrive)?

If they change it for the 2022 model I hope they will make an update for the 21 model cars.

Yeah, I hope they make an update.

[PaLaKaT]

Originally Posted by igelkotten82

You just highlighted the problem this thread is all about!
The car with 456 horsepower accelerates from 0-60mph in 3.8 seconds in 2018.
The lci model with 523 horsepower (67 more horsepower) accelerates from 0-60mph in over 4 seconds in 2021.

Has anyone else made any reclaims to Bmw besides DB_BMW and have they came back to you about the lack of performance (besides the problem you seem to have with the idrive)?

If they change it for the 2022 model I hope they will make an update for the 21 model cars.

The last thing i heard from the BMW NA is that they are looking into it, but i think the best course of action would be if everyone with the 2021 M550s started calling them as well. Here is the voicemail left by BMW NA regarding both issues.

[bimmer_335]

sounds like BMW is doing what VW did with emissions... totally wrong but hey who's gonna test it and catch us pants down

[PaLaKaT]

Just got off the phone with BMW NA, they denied buyback/swapping because they are saying that iDrive crash is being set off by Galaxy S21 an that it will be fixed soon(No date) with an update, I might have to lawyer up soon if it does not get fixed after the update... i don't understand why no other bmw has the same issue with Galaxy S21. My 2019 7 series has 0 issues.

As for launch issue he said work with the dealer even though i told him in a forum with hundreds of people reporting same issue, i even asked him if 2021 M550 is meant to be slower than previous gen vehicles with less Horsepower. He said dealership has the right contacts to escalate this issue. I guess i will knock on dealerships door for this one...

[crypto]

I'm glad to throw my hat into the complaining ring on performance if I can actually get some good tests in and have figures showing it's underperforming. I barely have any free time and don't have a regular solid spot I can do much testing or engage LC. I do have my dragy in the car so I'll see what I can do soon.

[AF]

Originally Posted by igelkotten82

In first gear it gets up to about 0,4 bar and in second gear it continues up to 0,8 bar before shifting into third gear where the pressure stays at 1.0 to 1.1 bar. But when driving in second gear from about 20mph and making a kick down the turbo pressure builds up much faster.
Will try it again in sports mode and launch control and eventually get a dragy to get the real numbers. Uploaded the short clip on instagram from todays test.
https://www.instagram.com/p/CN-191RB..._web_copy_link

Thanks for posting that video I never knew there was a turbo boost gauge, I never used full screen for the sport display. I tried flooring my car today (2021 M550) and I see the same thing you do with the low boost in first gear ... that is just so strange ... I didn't try launch control with the boost gauge displayed but this car just doesn't leap off the line from -0- mph. I also notice that hitting the gas pedal after 10 miles an hour this car feels insanely fast. It feels faster from 10 mph and up then when going from 0 mph and up.

I haven't really floored my car more then a couple of times since it is not fully broken in yet at only 1100 miles is there a chance it will open up more with some more miles on it ?

Originally Posted by DB_BMW

Just got off the phone with BMW NA, they denied buyback/swapping because they are saying that iDrive crash is being set off by Galaxy S21 an that it will be fixed soon(No date) with an update, I might have to lawyer up soon if it does not get fixed after the update... i don't understand why no other bmw has the same issue with Galaxy S21. My 2019 7 series has 0 issues.

As for launch issue he said work with the dealer even though i told him in a forum with hundreds of people reporting same issue, i even asked him if 2021 M550 is meant to be slower than previous gen vehicles with less Horsepower. He said dealership has the right contacts to escalate this issue. I guess i will knock on dealerships door for this one...

I don't have a Galaxy phone but how would that cause the Idrive to crash plus you make a very good point that you are not the only person with this phone.

By any chance do you have another phone you can use temporarily to see if it still crashes ?

[choppedliver]

Originally Posted by igelkotten82

The interesting part of this thread is to discuss if all Lci models have the same lack of performance from 0-60mph or if its just one car. Since it seems to be a general problem of all cars I enjoy to discuss the reason behind it and try to find out different reasons of why it is the way it is. To discuss if 4.1 seconds or 3.8 seconds is fast enough is totally uninteresting and pointless.

https://www.instagram.com/p/CN-191RB..._web_copy_link

Both our local car magazines complained of slow launches in testing. Best of 4.1 if I recall.

Next question in my 2020 I only get the hp/torque gauge when I choose sports displays. Is there more than one sports display?

I will mess with it again.

[crypto]

Originally Posted by choppedliver

Both our local car magazines complained of slow launches in testing. Best of 4.1 if I recall.

Next question in my 2020 I only get the hp/torque gauge when I choose sports displays. Is there more than one sports display?

I will mess with it again.

Ok so add me to the list. I totally bested your local car magazine though. Check out my smoking hot run.

I got some time with no kids in the car to do some runs and experiment.

- Tried brake boosting in Sport and Sport+.
- Tried brake boosting one time with DTC and DSC off.
- Tried launch control in Sport and Sport+

Car was warm, had little gas (started at around 48 miles till empty), outside conditions completely dry, and it was maybe 60 degrees F outside. I have All Season Continent DWS06 tires on 20" wheels and approximately 1550 miles on the car for these runs. The best runs came from Sport+ with LC.

The car is definitely slow as shit off the line in all cases before it really wakes up. Interestingly my fastest run reports it's about .2-.25 seconds slower than almost all of my other runs in the 0-10 mph reporting. The others were all around .66-.71s vs .92.

[Boosted_8]

Sooo class action time?

[crypto]

Originally Posted by Boosted_8

Sooo class action time?

Well if it's something they can fix with a software update then maybe more people raising the issue first is a good idea. I don't know. I guess I would wonder is how much time difference should one potential expect from summer vs all seasons? Negligible? .5 seconds? If the latter then I'd be at the advertised numbers with summer tires. In general I agree BMW tends to undersell their numbers ... so working hard just to possibly reach the advertised number would be dirt but still wondering. Also, I'd want to be prepared to respond to such a question if BMW claims I'm seeing lower numbers because of all season tires.. although I suspect the conversation would never get to that point. 😀

[remo999]

Well, generally I don't like "measurbators". But it became so interesting that I decided to build a little spreadsheet with xxx50 results - different cars, different years. All results are from C&D instrumented test.

What's interesting is that M850 and X5 M50i are both heavier than LCI M550 and still faster. Even behemoth X5 @ 5336lbs is faster.

I think that LCI M550 has computer reprogrammed to slow it down slightly in order not to hurt sales of M5 and M8. How they did it? I have no idea. Lower turbo boost while in first gear? Fuel ratio? Transmission? All together? Whatever it is they did it worked and results are shown. It could be that first batch of cars has some kind of piece of hardware that is not working correctly.

It's kind of sad as my 2018 M550 lease is almost up and now I'm not sure if I go with LCI.

[PaLaKaT]

Originally Posted by remo999

Well, generally I don't like "measurbators". But it became so interesting that I decided to build a little spreadsheet with xxx50 results - different cars, different years. All results are from C&D instrumented test.

What's interesting that M850 and X5 M50i are both heavier than LCI M550 and still faster. Even behemoth X5 @ 5536lbs is faster.

I think that LCI M550 has computer reprogrammed to slow it down slightly in order not to hurt sales of M5 and M8. How they did it? I have no idea. Lower turbo boost while first gear? Fuel ratio? Transmission? All together? Whatever it is they did it worked and results are shown.

It's kind of sad as my 2018 M550 lease is almost up and now I'm not sure if I go with LCI.

Wow nice comparison, thanks for that.

To be honest, I'm not sure how realistic it is, if i were in your boat I would go for 2020 M550 if there are any left...

[Boosted_8]

What times are 2021 M850i's putting down, I wonder if BMW also hobbled the 8er for the same reasons?

[Mike.L]

Heard about this on N54Tech, and can confirm that mine has a distinct lack of performance as well. Its actually even worse. 08/20 build, 2700 miles on her.

[crypto]

Originally Posted by Black335GT

Heard about this on N54Tech, and can confirm that mine has a distinct lack of performance as well. Its actually even worse. 08/20 build, 2700 miles on her.

Hmm I did 8 runs last night and all of them were under 4.5s. I think I got 4.37 just brake boosting in Sport. Any chance you were in Comfort or just accelerated without holding the brakes? DTC status?

Also I see you have 2% incline which I assume invalidated the results but not sure that would add that much time to account for the slowness.

[Mike.L]

Originally Posted by crypto

Hmm I did 8 runs last night and all of them were under 4.5s. I think I got 4.37 just brake boosting in Sport. Any chance you were in Comfort or just accelerated without holding the brakes? DTC status?

Also I see you have 2% incline which I assume invalidated the results but not sure that would add that much time to account for the slowness.

Actually, this was in Sport + with Launch control (got the flags). I'm 345lbs, which hurts the time somewhat, but not a seconds worth. The car is just slow off the line. I wouldn't be surprised in the least if BMW was limiting first gear, because once it shifts you can feel it pulling a lot harder.