Past week I had a bike incident with another cyclist. The rider in front of me slowed down and when I looked back to confirm no one was behind, he stopped and I hit him. Totally my fault, and no one get hurt. Typical mistake.

I gave my phone number to the other person and ask him if he wants to go to a bike shop at the moment but he refuse because it was late for him. Anyway, he contact me the day after asking for 370 euros for the repairs. I consider this amount of money ridiculous since the damage is only in the gear drive that is twisted (not broken).

At the moment I had some shots of the damage and a video of the person riding after with no problem apparently.

My question is if I should ask the person to take the bike to a shop repair that I trust and get a new budget for this? Or even buy the parts and install it by myself.

This is in Spain and I am not covered by insurance for this incident.

The person is very reluctant to detail the repairing. I told that I accept the costs and the repair shop but I need a detailed invoice. Somehow the pictures I took are helpful to clarify how damaged it was.

This was between two Bicycles. As additional info, we were not riding together.

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  • 7
    This could be a topic for the Law stackexchange site. Which country is this? Do you have any sort of liability insurance? The money claimed from you should in any case be backed by recepts of some form. Apr 22, 2020 at 16:04
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    I also think this is a legal question, best answered by Spanish experts, but it's great that you are asking for help and advice. It could be that 370 is a fair price, bikes can be expensive and so can labour, or it could be that someone is trying to get extra money out of your good nature. Not everyone would have done the decent thing like you are trying to do, so don't let someone take advantage. It won't hurt them to wait a short time while you decide how you want to proceed, and what money is fair. It is certainly in your interest to have the valuation done by someone you trust.
    – Swifty
    Apr 22, 2020 at 16:14
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    Definitely demand that he show you some credible documentation of the costs.
    – Daniel R Hicks
    Apr 22, 2020 at 17:05
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    Offering to do repairs yourself is an absolute no. The other rider has no idea of your competency, and you have a motivation to make repairs as cheaply and quickly as possible. Similarly you cannot ask the rider to use a repair shop you specify. They are the injured party, it's their bike so they need to use a shop they thrust. However, you can ask for a description of what was broken, what work needs to be done, cost (both parts and labor hours) and dispute it if you disagree with it. You can ask a separate repair shop you trust to review the work and cost and provide you evidence.
    – Argenti Apparatus
    Apr 22, 2020 at 19:13
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    @Swifty I'm not sure where you're from, but as far as I'm aware the person in back is always at fault. If you couldn't stop in time, then you were following too close. It doesn't matter if they had a good reason to stop. The only time the person in front would be at fault would be if they reversed unnecessarily, which would be very hard to prove unless you had a dash cam. Also, as per your earlier comment, it might be big deal for them to wait for the money if their bike is their primary method of transportation.
    – Kibbee
    Apr 22, 2020 at 20:58

1 Answer 1


Great job taking the photo at the time, it could end up saving you some money.

I can see an Acera rear derailleur(inexpensive), a seven speed freewheel (cheap), a rusty chain (poorly maintained), a bent derailleur hanger (possible damage) and a rear derailleur cable which is doing something slightly funny.

Focusing on the seven speed freewheel, we can tell that this is a budget bike. I would expect you could replace the whole bike for 370 euros. Labour charges will make up a large portion of a repair bill, but it does seem like an inflated price.

You absolutely must insist on transparency upfront from the bike owner. If they are not prepared to tell you what they want to spend your proposed 370 euros on, then I am confident they are trying to rip you off. If they tell you what the money will be spent on and you are struggling to decide if it is reasonable, please ask us about it with the updated info, before you pay any money at all.

Also seek some regional legal input into what your obligations and time frame need to be (we aren't lawyers!). If you meet your legal obligations and do so in a timely manner, then you are free to be as generous or not as you like in returning the bike to the condition it was in before the incident.

As for the original questions (sorry). I would suggest having the quote for the repairs approved by someone you trust in advance, yes perhaps a third party bike shop you trust. I would suggest not doing the repair work yourself. Even though that could be cheaper, you don't want any follow-ups from the other person. So if the repair is done at the other person's choice of repair shop, with your prior agreement about the cost and extent of the work, then they cannot follow up and ask you for more money after the fact.

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    I happened to check - an Acera grade rear mech in black is 16 euros brand new at CRC in Spain in late April 2020. chainreactioncycles.com/es/en/… OP is being gouged in costs.
    – Criggie
    Apr 23, 2020 at 10:55

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