Sudden Unintended Acceleration

Edlover · 04-02-2023, 11:39 PM

Hi All, I have been driving a 2020 M8 GC for just over 2 years. I love the car, but about a month ago, as I was pulling into a parking spot (head in), the car suddenly accelerated, jumped the curb and drove its self into a pole. Of course I was pressing the break pedal which did nothing until the car actually hit the pole and stopped.... The car has been at BMW Service for over a month now and they cannot figure out what went wrong.... Wondering if anyone else has experienced this sudden unintended acceleration with their car.

Padfan9 · 04-03-2023, 02:16 AM

Only thing I can think of is sometimes when the sensors come in, the car makes a “ding” sound and a P shows up. If you accidentally press the P, the car can start moving suddenly to park. Maybe something like that happened?

jargon · 04-03-2023, 08:21 AM

There’s a recent thread, maybe in the last 4 months, regarding this issue.

Vic55 · 04-03-2023, 09:12 AM

I had that surge occur again on Saturday but when Im close to an object in front of me, Im all over that brake pedal like a fly on shit.

Thankfully my brake held the car but I can see this as being an issue for sure.

MrRX34 · 04-03-2023, 09:46 AM

Holy shit 😟first I’m hearing of this mines a 2020 too.
Do our cars need an exorcism?

cfm56d7b · 04-03-2023, 11:58 AM

Alarming. Please share an update if BMW dealer provides any nisghts.

TupperBMW · 04-03-2023, 02:06 PM

Wow this is scary. BMW better figure this out and issue a recall

xmanpro · 04-03-2023, 02:58 PM

That’s some scary ass shit. Pls keep us posted.

mpop302 · 04-03-2023, 04:01 PM

I had a tiny surge this Saturday while coming to a stop.. it seemed like it downshifted into first at too high rpm. Although I noticed it, I was already on the brake so it wasn’t very risky. Doesn’t sound to be your situation but just thought I’d note it

SSBMW14 · 04-03-2023, 04:02 PM

Quote:

Originally Posted by jargon

There’s a recent thread, maybe in the last 4 months, regarding this issue.

Quote:

Originally Posted by Edlover

Hi All, I have been driving a 2020 M8 GC for just over 2 years. I love the car, but about a month ago, as I was pulling into a parking spot (head in), the car suddenly accelerated, jumped the curb and drove its self into a pole. Of course I was pressing the break pedal which did nothing until the car actually hit the pole and stopped.... The car has been at BMW Service for over a month now and they cannot figure out what went wrong.... Wondering if anyone else has experienced this sudden unintended acceleration with their car.

This was the post from earlier. Hope BMW sort this out quick. Not just related to the 8 but others as well.

Sudden acceleration and crash

limeypride · 04-03-2023, 04:04 PM

Never experienced it. Any indications it’s related to stall prevention (whether correctly detected or not)?

brlawyer · 04-04-2023, 04:02 AM

Quote:

Originally Posted by MrRX34

Holy shit 😟first I’m hearing of this mines a 2020 too.
Do our cars need an exorcism?

Are their cars named Christine?

Edlover · 04-04-2023, 11:29 PM

Quote:

Originally Posted by Vic55

I had that surge occur again on Saturday but when Im close to an object in front of me, Im all over that brake pedal like a fly on shit.

Thankfully my brake held the car but I can see this as being an issue for sure.

Wow, so you are having the same issue but thankfully you have not hit anything? Have you taken the car into service to see what's wrong with it?

Edlover · 04-04-2023, 11:32 PM

Quote:

Originally Posted by SSBMW14

This was the post from earlier. Hope BMW sort this out quick. Not just related to the 8 but others as well.

Sudden acceleration and crash

Thank you... this was very helpful as it seems to be an identical problem.... I'm still waiting to hear from BMW NA after they inspect the car.

Vic55 · 04-05-2023, 12:14 AM

Quote:

Originally Posted by Edlover

Wow, so you are having the same issue but thankfully you have not hit anything? Have you taken the car into service to see what's wrong with it?

No sadly I havent yet but will have them check when I get the oil changed.

wfbmw · 09-06-2023, 10:07 PM

Quote:

Originally Posted by Edlover

Hi All, I have been driving a 2020 M8 GC for just over 2 years. I love the car, but about a month ago, as I was pulling into a parking spot (head in), the car suddenly accelerated, jumped the curb and drove its self into a pole. Of course I was pressing the break pedal which did nothing until the car actually hit the pole and stopped.... The car has been at BMW Service for over a month now and they cannot figure out what went wrong.... Wondering if anyone else has experienced this sudden unintended acceleration with their car.

Ed, this exact thing happened to a family member pulling our 2022 M8 coupe into the garage. The car surged forward on its own accord, colliding with the garage. We are certain that this was not driver error, and have noticed a few similar incidents posted on the forums. Has the situation been resolved with BMW? I am trying to determine the right course of action to take here and am very interested in what happened to you and how BMW handled it.

mikerx5 · 09-07-2023, 11:36 AM

Is this a downshifting issue? On my M6 I have experienced similar things, its a little touchy if you come into the garage too quick and it goes from 4th to say 2nd. The RPMs jump - DCT?

bloozemanAZ · 09-07-2023, 12:43 PM

On the original thread I received an education regarding the 8-series (and surely other series with similar features) reads a red limit signs. However, just like the OP on that thread and this one that is not a factor as both were parking situations during the "lurch forward". Thankfully my 2020 M850i has never exhibited this issue whatsoever. It does sound like it's not an isolated case though whatsoever given others chiming in with similar experiences although not resulting in an impact. So now I'm wondering if I'm just dealing with a ticking time bomb as to when I experience the issue.

04-02-2023, 11:39 PM	#1
Edlover New Member 4 Rep 6 Posts Drives: 2020 M8 GC Join Date: Feb 2017 Location: Los Angeles, CA iTrader: (0)	Sudden Unintended Acceleration - M8 Drove itself into a pole Hi All, I have been driving a 2020 M8 GC for just over 2 years. I love the car, but about a month ago, as I was pulling into a parking spot (head in), the car suddenly accelerated, jumped the curb and drove its self into a pole. Of course I was pressing the break pedal which did nothing until the car actually hit the pole and stopped.... The car has been at BMW Service for over a month now and they cannot figure out what went wrong.... Wondering if anyone else has experienced this sudden unintended acceleration with their car.
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04-03-2023, 02:16 AM	#2
Padfan9 Sergeant 808 Rep 2,510 Posts Drives: 2022 M8 Competition Coupe Join Date: Jun 2011 Location: San Diego iTrader: (2)	Only thing I can think of is sometimes when the sensors come in, the car makes a “ding” sound and a P shows up. If you accidentally press the P, the car can start moving suddenly to park. Maybe something like that happened? __________________ '22 F92 M8 Competition Coupe - Frozen Brilliant White \| 8 Speed DCT \| Sakhir Orange/Black Full Leather \| M Perf CF Exterior Package \| M Perf. CF Exhaust \| BBS FI-R 21" Wheels \|
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04-03-2023, 08:21 AM	#3
jargon Private First Class 195 Rep 125 Posts Drives: ‘22 M8Comp Cabriolet Join Date: Sep 2022 Location: East Coast USA iTrader: (0)	There’s a recent thread, maybe in the last 4 months, regarding this issue.
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04-03-2023, 09:12 AM	#4
Vic55 Lieutenant General 19365 Rep 10,166 Posts Drives: 2023 BMW M8 Competition Coupe Join Date: Jul 2009 Location: THE Orange County iTrader: (9)	I had that surge occur again on Saturday but when Im close to an object in front of me, Im all over that brake pedal like a fly on shit. Thankfully my brake held the car but I can see this as being an issue for sure. __________________ 2024 BMW M3 CS Frozen Solid White 2023 BMW M8 Coupe Competition Alpine White 2022 Porsche Carrera GTS Coupe Shark Blue 2020 Audi R8 V10 Performance Suzuka Gray 2012 Mercedes Benz C63 AMG Black Series Obsidian Black
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04-03-2023, 09:46 AM	#5
MrRX34 Second Lieutenant 481 Rep 205 Posts Drives: M8 Vert Join Date: Mar 2010 Location: SoCal iTrader: (1)	Holy shit 😟first I’m hearing of this mines a 2020 too. Do our cars need an exorcism?
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04-03-2023, 11:58 AM	#6
cfm56d7b Lieutenant General 5886 Rep 10,256 Posts Drives: 2017 440i Gran Coupe & 2015 X5 Join Date: Nov 2012 Location: Orange County, CA iTrader: (2)	Alarming. Please share an update if BMW dealer provides any nisghts.
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04-03-2023, 02:06 PM	#7
TupperBMW Captain 994 Rep 761 Posts Drives: 2022 M850i Gran Coupe Join Date: Nov 2021 Location: Chicago area iTrader: (0)	Wow this is scary. BMW better figure this out and issue a recall __________________ Supercar Adventures is my YouTube channel: https://www.youtube.com/channel/UC4W...lUKB1w8ED5bV2Q
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04-03-2023, 02:58 PM	#8
xmanpro Lieutenant Colonel 3102 Rep 1,823 Posts Drives: 24 M8C 24 X6MC 21 M3C Join Date: Oct 2012 Location: Bay Area CA iTrader: (0)	That’s some scary ass shit. Pls keep us posted. __________________ 2024 M8C; 2024 X6MC; 2021 G80 M3C; 2022 P992140 RETIRED: 2021 F93, 2021 F96,2019 F82 M4C, 2018 F80 M3C, 2018 F86 X6M- black fire, 2015 F13 M6, 2015 F10 M5, 2012 F10 550i M-Sport, 2012 F13 650i X-Drive, 2009 E60 535i M-Sport, 2007 E60 530i
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04-03-2023, 04:01 PM	#9
mpop302 Lieutenant 786 Rep 453 Posts Drives: Bmw 7 Join Date: Feb 2019 Location: Las Vegas iTrader: (0)	I had a tiny surge this Saturday while coming to a stop.. it seemed like it downshifted into first at too high rpm. Although I noticed it, I was already on the brake so it wasn’t very risky. Doesn’t sound to be your situation but just thought I’d note it
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04-03-2023, 04:04 PM	#11
limeypride Brigadier General 4425 Rep 4,109 Posts Drives: 2022 M8 Competition GC Join Date: Oct 2016 Location: Orlando area, FL iTrader: (0)	Never experienced it. Any indications it’s related to stall prevention (whether correctly detected or not)?
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09-07-2023, 11:36 AM	#17
mikerx5 Captain 461 Rep 746 Posts Drives: 2014 F06, 2022 G06 Join Date: Oct 2008 Location: Providence, RI iTrader: (1)	Is this a downshifting issue? On my M6 I have experienced similar things, its a little touchy if you come into the garage too quick and it goes from 4th to say 2nd. The RPMs jump - DCT?
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09-07-2023, 12:43 PM	#18
bloozemanAZ Brigadier General 4269 Rep 4,335 Posts Drives: 2020 M850i Coupe Join Date: Oct 2019 Location: Arizona iTrader: (0) Garage List 2024 X5 X-Drive 40i [0.00] 2020 BMW M850i Coupe [10.00]	On the original thread I received an education regarding the 8-series (and surely other series with similar features) reads a red limit signs. However, just like the OP on that thread and this one that is not a factor as both were parking situations during the "lurch forward". Thankfully my 2020 M850i has never exhibited this issue whatsoever. It does sound like it's not an isolated case though whatsoever given others chiming in with similar experiences although not resulting in an impact. So now I'm wondering if I'm just dealing with a ticking time bomb as to when I experience the issue.
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