Buying a Used Bike: What to Check (and Avoid Stolen Ones)

How to buy a used bike safely: checking the frame, drivetrain, wheels and brakes, getting the right size, spotting stolen bikes by serial number, and negotiating the price.

A used bike is one of the best-value buys around

Bikes depreciate fast and are built to last, so a quality second-hand bike often beats a cheap new one for the same money. But you need to check the frame and components — and make sure it isn't stolen. Here's how.

Get the size right first

Frame size matters more than anything for comfort. Check the manufacturer's size chart for your height/inseam, and ideally test-ride it. A cheap bike that doesn't fit is no bargain.

Inspect the bike

Don't buy a stolen bike. Ask for the serial number (under the bottom bracket) and check it against stolen-bike registries (e.g. BikeIndex, Immobilise). A seller who won't share it, has no receipt, and offers a suspiciously cheap high-end bike is a red flag. Buying stolen goods is illegal and the bike can be seized.

Negotiate and buy safely

Use worn consumables (tyres, chain, brake pads) as fair price levers. Meet in daylight in a public place, and pay after inspecting. For the full routine see inspecting before you buy and avoiding scams.

Find the best price: our search compares used bikes across marketplaces at once — locally and beyond. Pair with bargain-spotting to find underpriced listings.

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