What issues have you experienced on your e-MTB?

What issues have you experienced on your e-MTB that required assistance?

  • Motor

  • Battery (including cabling)

  • Display and Electronic (mounting clip)

  • Brakes (including excessive noise, but not regular pad wear)

  • Suspension

  • Fenders

  • Frame & Structural

  • Wheels

  • Tires (including flat tires)

  • Drivetrain (derailleur, chain, chainring, cassette)

  • Charging unit

  • Lights and other accessories

  • No issues so far...


Results are only viewable after voting.

pagheca

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I would like to map out the most common e-mtb failures you've personally experienced on your e-MTB (any brand, any year).

Only first-hand experience counts. Multiple selections allowed. Feel free to share more details in the comments below.

Please comment below with more details
 
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Reliability of the motors has been pretty brutal - Shimano, Brose, Bosch, Avinox. I've had them all fully die. Only motor system I haven't had fully die is the Rocky Mountain Dyname. Forbidden Druid has been at the bike shop for the past two months, still waiting on a new motor. Between the reliability of the motors, the cost, and how fast they depreciate, it's quite the shit show.
 
Rear hub seized and cassette unwound. Current. Santa Cruz Vala 90 2026: Rear hub seized and cassette unwound and rubbed on the frame. But which unit caused the problem? Bunfight between e13 and Sram and maybe the mechanic who fitted the cassette.
Charger not charging below 10degC. Focus Jam2 2019: Shimano charger would not charge the battery if it was low and the temperature was below 10degC (a bit of a problem in January!). Was diagnosed by the dealer as a duff batch of chargers. I agree after consultation with people across the world with the same problem and batch number. But Focus said that a new battery typically fixes the problem. The dealer was so unconvinced that they gave me a new charger anyway. I got a new battery for free! So I never did confirm what the real problem was, but Focus are convinced that the new battery fixed the problem!

Never had a motor problem.
 
none! I maintain all my bikes....that includes a thorough check on any new bike of assembly and potential issues....and I fix them before they cause issues. . Since 2019 I have bought 2 Specialized bikes ( one was stolen!) and 3 Whyte bikes.
 
The only issue I’ve had on all my e-bikes is a Specialized TCU display went awry, took it to the shop out of warranty for diagnosis and they replaced it there and then FOC.

Oh, nearly forgot, purchased an e-gravel bike mail order that they forgot to take out of ‘transport/travel/demo mode’ so it had to be sent back and then re-dispatched once they’d sorted it.

Probably jinxed all my bikes now…
 
J’ai été affecté par deux problèmes que je n’ai pas pu résoudre moi-même. 1) Une entreprise (cadre léger en carbone), qui a vendu un cadre (EC971) mal conçu et qui a craqué à la troisième utilisation. Une autre entreprise (Shimano), qui a délibérément conçu un logiciel pour empêcher les clients, peut adapter sa transmission comme bon leur semble.
 
Lots of play on the motor axle on the Orbea Rise EP6RS, along with a broken speed sensor. The Liv Embolden had a controller issue but that was 2-3 years old.
 
none! I maintain all my bikes....that includes a thorough check on any new bike of assembly and potential issues....and I fix them before they cause issues. . Since 2019 I have bought 2 Specialized bikes ( one was stolen!) and 3 Whyte bikes.
I added the option "no issues" at the end for the very lucky of us.

I am surprised the faults are so equally distributed so far. Please keep voting so that this poll assumes a statistical meaning! THX!
 
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none! I maintain all my bikes....that includes a thorough check on any new bike of assembly and potential issues....and I fix them before they cause issues. . Since 2019 I have bought 2 Specialized bikes ( one was stolen!) and 3 Whyte bikes.
How do you fix the motor?
 
Currently on Avinox M1 motor no2 awaiting no3.

First had axle play, second has play in the chainring which was apparent out of the box. I fear there are big QC issues with Avinox.
 
I would like to map out the most common e-mtb failures you've personally experienced on your e-MTB (any brand, any year).

Only first-hand experience counts. Multiple selections allowed. Feel free to share more details in the comments below.

Please comment below with more details
No issues across Trek Rail (Bosch Gen 4) owned since 2022, Specialized Levo SL2 owned since 2024. New Orbea uses Bosch Gen 5, hopefully no issues to come for Motor, although it is stored in the house in dry, clean conditions which likely helps. Weekly checks / maintenance catches all other mechanical / AXS issues, and forum has been extremely useful to forewarn about e-bike specific maintenance to watch out for since 2022 (Secure Bosch Lockrings etc)
 
When buying an e-bike with Avinox, regardless of the brand
The first units of any new platform—especially those with powerful motors, large batteries, and complex carbon frames—deserve a proper commissioning process. This is not alarmism; it is basic preventive maintenance.
The list of early issues observed so far is short and, above all, manageable:
Check the motor mounting bolts and confirm the torque specified by the manufacturer.
Perform a proper PDI (Pre-Delivery Inspection), not just taking the bike out of the box: headset, stem, handlebar, brake calipers, axles, linkages, suspension, and lubrication.
Ensure the dropper post has the correct height and insertion depth before spending money on one with more travel.
On high-pivot frames, monitor the idler from the start: free rotation, play, chain alignment, and noise. It is an additional wear component, not a defect in itself.
Be clear about how the brand or distributor handles spare parts, warranty, and Avinox diagnostics. With newer brands, this can be as important as the spec sheet.
As of today, there is no solid public evidence of repeated frame failures, widespread structural issues in high-pivot systems, endemic Avinox motor failures, or a global recall campaign.
The most sensible recommendation when receiving the bike is simple: request or perform a documented torque inspection, check the headset and linkages, apply witness marks on critical bolts—motor, pivots, stem, and calipers—and carry out a second full inspection after the first 50–100 km.
An e-bike weighing 23 kg, with 800 Wh and over 100 Nm, should not be treated like a conventional bicycle. When properly checked from day one, most potential issues are detected before becoming actual failures.
 
2022 Orbea Rise - this week rear hub failed. Raceface have sent me a new one no questions asked. It's done 3000k no other issues apart from wear and tear.

2026 Obrea Wild - Bosch motor torque sensor randomly failing, off to lbs next week for diagnostics. Only 200 miles on it so slightly anoying...
 
When buying an e-bike with Avinox, regardless of the brand
The first units of any new platform—especially those with powerful motors, large batteries, and complex carbon frames—deserve a proper commissioning process. This is not alarmism; it is basic preventive maintenance.
The list of early issues observed so far is short and, above all, manageable:
Check the motor mounting bolts and confirm the torque specified by the manufacturer.
Perform a proper PDI (Pre-Delivery Inspection), not just taking the bike out of the box: headset, stem, handlebar, brake calipers, axles, linkages, suspension, and lubrication.
Ensure the dropper post has the correct height and insertion depth before spending money on one with more travel.
On high-pivot frames, monitor the idler from the start: free rotation, play, chain alignment, and noise. It is an additional wear component, not a defect in itself.
Be clear about how the brand or distributor handles spare parts, warranty, and Avinox diagnostics. With newer brands, this can be as important as the spec sheet.
As of today, there is no solid public evidence of repeated frame failures, widespread structural issues in high-pivot systems, endemic Avinox motor failures, or a global recall campaign.
The most sensible recommendation when receiving the bike is simple: request or perform a documented torque inspection, check the headset and linkages, apply witness marks on critical bolts—motor, pivots, stem, and calipers—and carry out a second full inspection after the first 50–100 km.
An e-bike weighing 23 kg, with 800 Wh and over 100 Nm, should not be treated like a conventional bicycle. When properly checked from day one, most potential issues are detected before becoming actual failures.
Fully agree.
 
Im on forbidden druid m1, second motor waiting for (maybe??) third one.
The first motor add multiple failure at ~1700km, batterie error, torque captor error…
The second is working for now on but started making a crazy R2D2 noise at ~700km, still waiting if its taken care of by warranty
Outside of that the idler bearings have criticaly failed at ~1000km and was quickly taken care of by forbidden so, that fine to me…
 
Headsets. Every ebike I've owned & most of my friends bikes have had creaking headsets in less than a year, sometimes within a couple of months/<100 miles. I guess it's because manufacturers fit the cheapest they can get away with because nobody chooses a bike based on what headset it has. Replacing with any half-decent headset with an upper taper wedge made from alloy has always solved the issue
 
I would like to map out the most common e-mtb failures you've personally experienced on your e-MTB (any brand, any year).

Only first-hand experience counts. Multiple selections allowed. Feel free to share more details in the comments below.

Please comment below with more details
Bosch motor PCB failures on Gen 2 and Gen 4. Thank goodness for Ebike Motor Company for fixing the issues and for making the motors more resilient with their upgrades. Otherwise I would have now two eMTB’s dead in my garage.
 
None motor or battery related. All other issues have been issues I could have with a normal bike.

My missus 2017 Giant Full E 1 Pro had a wire break, due to it being stretched as the rear suspension worked, more an early shitty design than common eeb issue.
 
I’m surprised that the percentages are not relative to the total, but to the number of voters. In this way, 50% means that half of the voters had engine problems, not that half of the problems are related to the engine, as I had expected.
 
As with all polls, they can quickly skew the reliability of a product - the poll is well intentioned, but and I feel that it is worth seeing the problems that people are having with e-bikes, but it would be nice to get a far more balanced outlook, as so much seems to be doom and gloom. I have had a specialized Levo Gen 3 for 2 1/2 years now and the only problem has been the handlebar switch that changes the power settings. It was a £75 replacement from Certini. I could therefore put that the problem I have had with my Specialized is a handlebar switch, but in reality, this is small beans for the total enjoyment and freedom the bike has provided. Trips in Morzine, Bike Park Wales, Black Mountains in Wales - trails and rides that should kill a bike and the Levo has handled all with aplomb.
 
As with all polls, they can quickly skew the reliability of a product - the poll is well intentioned, but and I feel that it is worth seeing the problems that people are having with e-bikes, but it would be nice to get a far more balanced outlook, as so much seems to be doom and gloom.
I agree with you, but I wanted to understand, after reading about so many issues, which is the less reliable components in an e-mtb. I would not be surprised they are the moving parts: motors, drivetrains, wheels, brakes.

My feeling is that e-mtb are reliable no less (and no more) than any other "mean of transportation". One should also consider that using them on technical traisl is very different than using them most on gravel or for short trips, like me.
 
How do you fix the motor?
As the ebike motor repair guys constantly tell folk, the biggest single cause of failure is water ingress. I dont use anything more than brushes and a damp cloth to clean the bike, and my bikes are stored in my house which means even condensation which occurs naturally in a closed metal casing like a motor after use, gets the chance to dry naturally. The same apllies to all the electronic components on the bike.
 
Avinox Failure Videos - Avinox – Google Drive

Simple suggestion.

If the majority of e-bikes are reliable, extend the warranty from 2 years to a realistic lifecycle of the frame, such as 5 years.

Having 2 motors fail with little use, one without even being turned on - my faith in Avinox is lost.

Videos - Avinox – Google Drive
 
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As the ebike motor repair guys constantly tell folk, the biggest single cause of failure is water ingress. I dont use anything more than brushes and a damp cloth to clean the bike, and my bikes are stored in my house which means even condensation which occurs naturally in a closed metal casing like a motor after use, gets the chance to dry naturally. The same apllies to all the electronic components on the bike.

The motor failure in a wet climate is 10 fold to the failures in a dry climate. Its suspected that the motor casing expands with heat and when water is present, it gets drawn in to the casing ? Is that your opinion ?
 
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