Brompton has issued a voluntary recall for all Brompton electric bikes that were manufactured or had a firmware update between May 2020 and February 2021.
19 July 2021 -We contacted Brompton to find out how many bikes have been affected by this firmware issue, and how many have been fixed. Brompton says:
'There were 7262 impacted bikes, of which 3997 (55%) have been reworked.
Until 1st September 2021, owners can follow the steps at to get their Firmware upgraded free of charge. After this date owners will need to contact Brompton directly for support in getting a free firmware update at '
We will continue to update this story as Brompton continues with this recall.
End of Updates
The issue, caused by the firmware installed on some models, may lead to an electrical systems failure. This could potentially lead to the bike continuing to accelerate even when the rider is not actively pedaling.
The brand is offering affected customers a free firmware update and a £20 'goodwill' voucher, but you need to contact them before 1 September 2021.
Under specific circumstances, the firmware installed on these bike models may cause a system failure.
This could lead to a small possibility of the electric system continuing to provide assistance to the motor, causing the bike to keep accelerating even when the rider is not actively pedaling, which could potentially cause an accident.
At the time of writing, Brompton says there has only been one reported fault, which did not result in any injury or accident.
In its recall notice Brompton said: 'Through our continual quality assurance processes, we have become aware of an issue with the Firmware installed on some Brompton Electric bicycles.'
'Although the risk of an accident occurring is very low we have begun a programme to repair all affected bikes and upgrade the Firmware to Version 1-2-10-2, free of charge, to all affected customers; note that this free update is available until 1st September 2021.'
'To show our appreciation for your understanding and support, and as a gesture of goodwill, affected customersu202fwill be given au202fcreditu202fofu202f £20 for each bikeu202faffected.'
If you've purchased a Brompton e-bike since 1 May 2020, or you visited an accredited Brompton retailer for a service of Firmware update between 1 May 2020 and 1 March 2021, your bike may be affected.
If your bike is affected, contact your local Brompton Electric retailer to schedule an appointment to receive your Firmware update.
You can find your closest dealer using Brompton's page. Make sure you select 'Brompton Electric' from the drop down menu before searching - as non-Brompton Electric dealers are unable to perform the upgrade.
Brompton has also partnered with London-based bicycle repair company HaveBike, meaning customers in London can arrange to have the Firmware upgrade done at home (only until 1 June 2021). You can book an appointment on the website.