BYD Atto 3 charging cost in the United Kingdom (2026)

Charging a BYD Atto 3 from 10% to 80% costs £5.46 overnight on Intelligent Octopus Go and £45.98 on InstaVolt rapid chargers.

Worked out from BYD's published charge time and the Ofgem price cap in force from 2026-10-01. Prices exclude the daily standing charge, which you pay whether or not you charge.

The same charge, four different places

All figures below are for the same 10% to 80% top-up, which puts about 50 kWh through the meter. Where you plug in changes the bill by a factor of 8.

The rapid charging row uses the same wall energy as the AC cases, so treat it as indicative. DC losses differ and BYD has not published a figure for them. Public prices are provider-specific, not national averages.

Why the overnight rate does not cover a full charge

This is the part most charging calculators get wrong, and it is worth understanding before you switch tariff. Intelligent Octopus Go gives you 6 hours of cheap electricity between 23:30 and 05:30. At 7 kW that window can deliver about 42 kWh.

A full charge needs 71.4 kWh and takes about 10 h 15 min estimated. Even a 10% to 80% top-up needs 50.0 kWh, which is more than the window holds. Assume the whole session runs at £0.08/kWh and you will underestimate the bill by about 27%.

Rapid charging

BYD publishes one verified interval: 30% to 80% in 29 minutes verified, measured on a 150 kW charge point. That works out at an average of about 63 kW estimated, because it assumes half the rated capacity moves across the interval, which rated capacity does not guarantee.

The 150 kW figure describes the charge point BYD used, not what the car accepts. The car's own peak is 88 kW verified, published on BYD UK's Atto 3 page, and consistent with the 63 kW average: a peak is held briefly, not across the whole interval. Quoting a charge point's rating as if it were the vehicle's is a common way specification tables overstate performance.

Watch the window as well. BYD measures from 30%. Set against a claim quoted from 10% to 80%, that leaves out the first 20 points of charge, which are the fastest part of the curve, so starting at 30% skips the easiest work and produces a better number. Read across a comparison table without checking the windows and this car looks quicker than it is.

Against petrol, per mile

BYD publishes 3.98 miles/kWh (WLTP combined) for the BYD Atto 3. WLTP consumption counts energy from the mains, so charging losses are already in that figure and a price per kWh applies to it directly. Nissan UK publishes 6.2 to 6.4 l/100km (WLTP combined) for the Nissan Qashqai Mild Hybrid verified (Nissan UK), a petrol family SUV of similar size. Unleaded was £1.644 a litre in the week commencing 2026-09-07 verified (DESNZ weekly road fuel prices).

At the better end of its range the petrol car costs about 2.5 times as much per mile as the BYD Atto 3 charged at home on the capped rate. On a rapid charger at InstaVolt's standard rate the BYD Atto 3 costs more per mile than the petrol car (23.1p against 16.9p). Both consumption figures are laboratory figures on the same test cycle, which is the fairest comparison available and still not what either car does on the road: the owner's car runs above its WLTP figure, and so will a petrol car. The overnight row uses the effective price of the 10–80% scenario above, which rests on the scaled 7 kW time, so it stays estimated; so does the rapid-charging row, because the WLTP figure was measured through AC charging and BYD publishes no DC loss figure. The petrol price is a national weekly average, not a forecourt price.

Questions owners actually ask

How much does it cost to fully charge a BYD Atto 3?

A full charge draws about 71.4 kWh from the wall on a 7 kW home charger. At the Ofgem capped rate of £0.26/kWh that is about £18.79. The energy figure is derived from BYD's published 11 kW charge time; BYD publishes no 7 kW time, so the duration is scaled and labelled estimated.

Can I charge a BYD Atto 3 entirely on the cheap overnight rate?

No. Intelligent Octopus Go gives 6 hours of cheap electricity, which at 7 kW is about 42 kWh. A full charge needs 71.4 kWh, so about 41% of it falls outside the window and is billed at the standard rate.

Why does charging at 7 kW take longer than 8 h 38 min?

Dividing 60.48 kWh by 7 kW gives 8 h 38 min, but that assumes every kilowatt-hour leaving the wall reaches the battery. It cannot: some is lost as heat in the onboard charger, in the battery management system and in thermal conditioning. BYD publishes 6 h 30 min on an 11 kW supply, which means about 71.5 kWh passes through the meter to fill a pack rated at 60.48 kWh, roughly 18% more. BYD publishes no 7 kW time at all, so the duration used here, about 10 h 15 min, is scaled from the 11 kW figure and labelled estimated.

Will a BYD Atto 3 charge at 11 kW at home in the United Kingdom?

Only with a three-phase supply, which most UK homes do not have. On a standard single-phase supply the car charges at up to 7 kW even though the onboard charger is rated at 11 kW. BYD states the 11 kW rating for the Comfort and Design trims and publishes no AC figure for the Active.

How fast does a BYD Atto 3 charge on a rapid charger?

BYD publishes 30–80% in 29 minutes, measured on a 150 kW charge point, which averages about 63 kW. The 150 kW is the rating of that charge point, not what the car accepts: BYD UK publishes the car's peak as 88 kW, which sits above the 63 kW average as a peak should. Note also that BYD measures from 30%; a claim quoted from 10% covers more of the fast part of the curve, so this time is only comparable with a rival's measured over the same window.

Where these numbers come from

The charge time behind every figure here is BYD's published 6 h 30 min on an 11 kW supply. Energy is derived from that time rather than from battery capacity divided by charger power, which means the calculation does not depend on whether the published 60.48 kWh is gross or net, a distinction BYD does not state.

BYD publishes no charge time for a 7 kW supply, which is what most single-phase British homes deliver. The duration shown for 7 kW is scaled from the 11 kW figure on the assumption that the same energy passes through the meter at either power, and is labelled estimated throughout.

Every figure BYD publishes for this car, with its source, is on the page BYD Atto 3 charging time, DC charging speed and battery capacity; the arithmetic is explained in how the calculation works; and this calculator for other markets is listed under BYD Atto 3 charging cost by market.

Electricity prices are dated and sourced. Nothing here is modelled from an assumed efficiency unless it is labelled estimated.

Corrected 2026-09-12. This page previously said BYD does not publish the BYD Atto 3's peak DC charging power. BYD UK's Atto 3 page states "a charging capacity of DC 88kW"; the figure is now shown as verified with that source. It had earlier been removed from this site because no manufacturer document could be traced for it.

Corrected 2026-10-01. The rapid charging section previously said the same car sold in other markets posts a comparable time against a much lower charge point rating. No BYD document publishes such a time, and the car sold elsewhere carries a different DC module, so the sentence has been removed. The same section said that most manufacturers quote from 10%; that claim had not been sourced, and the passage now says only that two intervals compare when they cover the same window.