Repair your bike yourself or take it to the shop: the real maths

The real question isn't the price

It's not "shop or not", it's do I know what I'm doing, and do I have the tool. A botched repair costs more than the shop: a scratched brake disc, a stripped screw, a cable tightened badly that fails on a descent.

The decision table

The 3-question rule

Before you decide, ask yourself: is this a safety part (brake, steering)? Do I have the specific tool (torque wrench, bleed kit)? Can I mess it up without breaking it? If you answer no, no, no—head to the shop.

For everything else, doing it yourself saves labour costs (£25–£50/hour) and, more importantly, gives you roadside independence.

AI shifts the grey area

Many repairs that "belong in the shop" become doable when someone guides you step-by-step, with the right torque specs and the pitfalls of your specific model. That's exactly what L'Atelier's AI mechanic does: you describe your bike, it gives you the tailored procedure, the order of steps, and the safety warning when you need to stop.

Upshot: you do what's reasonable yourself, and you save the shop for the real workshop jobs. For costs, see how much a bike service costs at the shop.