§ Calculator

What an EV actually does, between charges.

WLTP is a lab number. Real-world range depends on speed, temperature, whether a heat pump is fitted, whether you’re towing, and battery state of health. Edit the inputs, see the real number.

Estimated real-world range
225 miles
97% of baseline · 2.92 mi/kWh effective · 77 kWh usable
01

Your car

Real-world efficiency at 70mph, 20°C, no towing. Most family EVs are 2.8 – 3.4 mi/kWh; smaller hatchbacks (Renault 5, ë-C3) reach 3.6 – 4.0; performance models (Model Y Performance, EV6 GT) drop to 2.4 – 2.6.

02

Your trip

Speedmph
Motorway
03

Your equipment

Heat pump fitted
Towing
04

Battery health

100% for a new car. Typical 3-year-old EV: 94 – 97%. Walk away from anything below 90%. Background on SOH.

Factor breakdown

FactorMultiplierEffect
Speed (70 mph)1.00×0%
Temperature (5°C)0.87×-13%
Heat pump fitted1.12×+12%
Not towing1.00×
Battery health (100%)1.00×

What this means in practice

Round-trip with 20% reserve: up to 90 miles each way without needing to charge en route.

Longest single-hop: 180 miles before needing to top up.

Plan a charging stop on trips above: 162 miles.

Tuning notes

  • Multipliers are tuned against EV Database aggregate user data and independent road tests. ±10% accuracy in typical conditions; less accurate at temperature extremes or very heavy loads.
  • Excludes wind, gradient, payload, tyre pressure, and driving style. On a still day with rolling motorway and one passenger, this is roughly what you’ll see.
  • The buyer report does this estimate against your actual regular journeys, the specific cars in your shortlist, and your tariff mix.