What an electric bike actually costs to run

An electric bike is cheap to run and not free to own. Here are the real numbers, including the two costs people forget.

Electricity: genuinely trivial

At the UK price cap of roughly 24.7p per kWh, a 500Wh battery costs about 12p to charge from empty. Even riding every day and charging fully each time, that is around £44 a year. A large 840Wh pack works out near £75. Electricity is the least of it.

The costs people forget

Drivetrain wear

This is the real running cost of a mid-drive. Motor torque and your torque go through the same chain, so chains stretch faster. Budget on replacing a chain roughly twice as often as you would on an unassisted bike — call it £30–50 a time fitted. Replace it when it stretches and the cassette survives; leave it and you buy a cassette and chainring too, which is a £150 job rather than a £40 one.

Tyres

E-bikes are heavier and faster off the mark, and tyres wear accordingly. On a daily commute expect a rear tyre annually rather than every two or three years.

Brake pads

More mass to stop, more often. Disc pads on a commuting e-bike are a two-or-three-times-a-year item rather than an annual one. They are cheap; letting them go to metal and scoring the rotors is not.

The battery, eventually

Batteries are a consumable, not a permanent part. A replacement is a significant cost after three to five years of regular use — from around £200 for a small pack, and considerably more for the 600 to 840Wh batteries fitted to the bikes we sell. Amortised, it is the largest genuine running cost of owning an e-bike, and any shop that does not mention it is not being straight with you. Ask us for the current price on a specific model.

A realistic annual figure

Item	Daily commuter	Weekend rider
Electricity	£40–75	£10–20
Chains (2–3 a year vs 1)	£80–120	£35
Tyres	£40–70	£20
Brake pads	£30–50	£15
Annual service	£60–110	£60–110
Battery, amortised	£70–150	£40–80
Total	£320–575	£180–280

Against the alternatives

For context rather than as a sales argument: a 10-mile round-trip commute by car costs most people well over £1,000 a year once fuel, wear, parking and the proportion of insurance and tax attributable to it are counted. A zone 1–2 London travelcard is over £1,900. Those comparisons are why e-bikes sell — but they only hold if you actually ride it, which brings us to the honest bit.

When it is not worth it

If your commute is under two miles and flat, a £300 second-hand pedal bike will do the same job and you will not worry about it being stolen. If you would ride twice a month in summer, the maths never works. An e-bike pays for itself through frequency, not through any property of the bike.