Enter Your Fleet Details — Get a UK TCO & Savings PDF
Compare EV vs diesel pence-per-mile and whole-life TCO for UK fleets. All currency GBP.
🚀 BUILD VERSION UK-PRESET-5 – 17/08/2025
Defaults from RAC Fuel Watch (diesel), TfL (ULEZ/CC), GOV.UK (VED). Adjust for your fleet.
Inputs (UK)
Fuel economy unit:
Live conversions: 42.0 MPG (UK) • 6.7 L/100 km • 35.0 MPG (US)
Charging scenario (sensitivity)
Only 'My price' uses your entered rate. Options marked * use typical tariffs and losses.
Reimbursement policy (EV business miles)
Fleet composition (optional)
UK charges & tax
Results
Fleet savings (total)
£245,821
Simple payback
2.4 yrs
TCO – per vehicle (discounted)
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TCO – ICE (per vehicle)
£58,585
TCO – EV (per vehicle)
£50,391
Fleet ICE (total)
£1,757,565
Fleet EV (total)
£1,511,743
Fuel economy snapshot: 42.0 MPG (UK) · 6.7 L/100 km · 35.0 MPG (US)
As of Aug 2025 — RAC Fuel Watch (diesel), TfL (ULEZ/CC), GOV.UK (VED), HMRC (AER/NIC).
EV VED auto: £10 (year 1), then £195/yr; +£425 ECS years 2–6 if list price >£40k.
Employer NIC on EV BiK auto: BiK 3%→4%→5% on P11D (Class 1A at 15%).
EV ULEZ assumed £0/day; Congestion Charge £0/day only if CVD registered and before 25 Dec 2025.
AER: if selected, employer reimburses 7p/mile instead of paying kWh.
Employer NIC on EV BiK auto: BiK 3%→4%→5% on P11D (Class 1A at 15%).
EV ULEZ assumed £0/day; Congestion Charge £0/day only if CVD registered and before 25 Dec 2025.
AER: if selected, employer reimburses 7p/mile instead of paying kWh.
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Key assumptions
| Vehicles | 30 |
| Annual mileage | 20,000 miles |
| Diesel price | £1.43 per litre |
| Electricity price | £0.30 per kWh |
| Analysis period | 5 years at 8.0% discount rate |
Cost breakdown (per vehicle, discounted)
| Diesel cost | £13,065 |
| Electricity cost | £7,734 |
| Maintenance | £7,985 ICE / £4,791 EV |
| Insurance | £3,194 ICE / £3,593 EV |
| Taxes & charges | £12,058 ICE / £4,075 EV |
| Residual value | £5,717 ICE / £9,052 EV |
| Charger cost | £1,250 |
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