Fleet Fuel Saver

If the saving is lower or higher

The working

Cost per mile

0p

Diesel per vehicle each year

0 L

Fuel cost per vehicle each year

£0

Fuel cost for the whole fleet

£0

Share of fleet driven by trained drivers

100%

How far to trust it

Treat this as an estimate, not a promise. Published results for fuel-efficient driver training programmes have quoted average savings of about 10% for truck drivers, and some council road safety pages quote 10 to 15%. A New Zealand course reported 6.8%. That is why the slider starts at 5%.

Many of those figures were measured on or soon after the training day. Savings last only while drivers keep the habits, so compare your fuel use before and after.

Gallons are UK gallons (4.546 litres) and the CO₂ figure uses about 2.6 kg per litre of diesel. The 44 tonne artic starting figures, about 8 mpg and 73,000 miles a year, come from Road Haulage Association figures. Check them against your own fuel cards.

• Commercial Motor: fuel-efficient driver training results
• Hartlepool Council: fuel-efficient driving training
• HWR: New Zealand driver training results
• Transport Engineer: RHA fuel cost figures
• RightFuelCard: typical mpg by vehicle

About the electric figures

The training savings above were measured on diesel lorries. Smooth, planned driving helps electric lorries too: fleets in the UK's electric lorry trials found driving style affects range even more than it affects diesel economy. There is less published data on the size of the saving, so keep the slider low and compare your own energy use before and after.

The starting figures are typical real-world values. A 44 tonne artic uses about 1.9 kWh a mile (roughly 1.2 kWh a km). An 18 tonne rigid and a coach use about 1.5 kWh a mile, and a large 3.5 tonne van about 0.42 kWh a mile. Electric lorries in the UK trials averaged about 1,350 km a week, so the lorry presets use 43,000 miles a year. The 40p price is close to what public truck hubs charge at the low end (Milence Immingham listed 39.9p plus VAT), and public chargers on my charging map go up to about 85p. If you charge at your own depot, use your own tariff.

"Range per charge" shows how much further a trained driver could go on the same charge at the saving you choose.

• ICCT: real-world electric tractor-trailers (2025)
• Designwerk: electric truck energy use
• Öko-Institut: electric delivery trucks in service
• Route One: electric coaches in UK service
• Van Reviewer: large electric van real-world test
• trans.info: UK electric lorry trial findings
• Electric Freightway final report (2026)
• Milence: Immingham charging hub