A temporary hold, also known as a pre-authorization, is not a charge. You may see an amount put on hold on your card when you start a ride to verify that your select payment method has enough funds to pay for a ride. This will show up as a "pending" charge on your bank statement. This hold ensures there are enough funds available to pay for your ride.
The amount is dependent on currency and country.
For example, in Euros, it is usually €5-€8 and around 800 ISK in Iceland.
Releasing the held amount
We release this temporary authorization immediately after your ride ends. Since this is not an actual charge, you may not see this show up as a refund to your account.
The time it takes for the release to be reflected on your bank statement is dependent on your bank. Some banks may take up to 5 or 10 days to reflect the release on your bank statement. We encourage you to check with your bank to understand their policies on pre-authorization holds.
Read more about it here: Pre-authorization