BYD EV Range Calculator

Published configuration reference

Scroll the table horizontally on a small screen to see the rating and source.

These are selected UK WLTP combined references, not every BYD model or market. DOLPHIN SURF capacity is the source’s rated capacity, not a claim of usable energy. Its model year is not inferred from the date of this check. City-only and plug-in hybrid total driving ranges are excluded.

Choose the exact BYD and the correct range column

The current 2026 SEAL configurator lists Design rear-wheel drive at 354 miles and Excellence all-wheel drive at 323 miles WLTP combined. A higher trim does not automatically have a longer range. The selector retains each drivetrain instead of applying a generic AWD deduction.

DOLPHIN SURF: city range and combined range differ

The official DOLPHIN SURF specification has separate combined and city columns. Boost is 200 miles combined and 305 miles city; this planner uses 200. Active and Comfort likewise use their combined entries. A city figure can be relevant to a city comparison, but it should not replace the combined figure in a motorway plan.

For your own urban route, measure the entire routine: driving, repeated parked intervals and cabin preparation. A recent full-charge equivalent from that routine is more relevant than borrowing a laboratory city maximum and treating it as guaranteed distance.

Battery chemistry does not set an annual range penalty

BYD identifies the DOLPHIN SURF battery as Blade LFP. That label alone cannot tell this tool the condition of your particular battery or the loss on a cold journey. An automatic age deduction would also double count battery condition when a measured baseline already reflects the current vehicle. Use recent observations, and consult your model’s manual for charging guidance.

Keep BEV planning separate from DM-i

A BYD plug-in hybrid can advertise a distance that combines battery and petrol operation. Do not enter that combined powertrain distance as battery-only range. Plan its electric-only distance separately from the distance supported by petrol.

Compare two charging routines

Keep the same measured baseline and conditions factor while changing departure and reserve percentages. This isolates the effect of the charge window. If you change the model, weather assumption and reserve at once, it becomes hard to see what caused the result.

For a longer journey, check the exact vehicle’s connector, approved charging equipment and route arrival estimate. Plan around an accessible charger and a reachable alternative, rather than treating the remaining dashboard distance as a fixed promise.

Calculation method and owner calibration

Distance = full-charge range × conditions factor ÷ 100 × (starting charge − arrival reserve) ÷100

The formula assumes distance scales approximately with usable state of charge. It models neither a charging curve nor changing wind, elevation, cabin energy or road conditions. The conditions factor is an explicit user assumption; it is not a validated model-specific weather forecast.

To create an owner baseline, divide a representative trip’s distance by the fraction of charge used. For example, 90 miles using 40 percentage points gives an approximate 225-mile full-charge equivalent. Repeat on comparable journeys. Small charge changes and rounded dashboard readings can make a single short trip misleading.

A 225-mile owner baseline, 80% conditions factor and 80% to 10% charge window gives126.0 miles: 225 × 0.80 × 0.70. Keep the factor at 100% if the baseline already represents the journey, battery condition and load. This page applies no automatic battery-age penalty, heat-pump bonus or universal temperature multiplier.

Published presets are locked to their source values. Choose the owner option to enter your own full-charge range. The 0% reserve default only shows the complete mathematical baseline; set a practical reserve before planning a trip.

Questions BYD owners ask

Continue planning

EVRatio is an independent planning website. A comparison rating and a scenario estimate cannot promise the distance your car will travel.