Free Road Vehicle Tool

Vehicle Diesel Usage Calculator

Instantly calculate mpg, litres per 100 km, cost per mile and total fuel cost for your lorries, HGVs, vans or fleet vehicles.

Enter Your Journey Data

Input recent trip or period to see real fuel economy and costs.

UK Road Vehicle Benchmarks 2026

44t Artic (motorway, loaded)7–9 mpg
44t Artic (mixed roads)6–8 mpg
18–26t Rigid truck9–12 mpg
3.5–7.5t Van25–35 mpg
Typical fleet average8–10 mpg

Based on 2025–2026 UK averages. Actual varies by load, speed, tyres, aerodynamics & driving style.

Track Fuel Economy & Full Fleet

Log fuel fills, see mpg trends per vehicle, get MOT/service reminders, and calculate total cost per mile/km.

  • Real-time mpg & cost tracking
  • Compliance (MOT, tax, tachograph)
  • Team event logging from cab
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How Much Diesel Should Your Lorry or Van Use in 2026?

Pump diesel prices have swung significantly through 2026 — always check your own fuel card statement or receipt and update the price field above rather than relying on a fixed figure. Fuel is typically the largest running cost for haulage and logistics fleets, so improving mpg by even 1 point can save thousands annually.

Typical UK Road Vehicle Consumption (2026)

  • 44-tonne articulated HGV (motorway loaded): 7–9 mpg
  • 44t artic mixed roads: 6–8 mpg
  • 18–26t rigid truck: 9–12 mpg
  • 7.5t rigid: 12–18 mpg
  • 3.5–7.5t van: 25–35 mpg

Quick Tips to Improve mpg

  1. Reduce speed — every 5 mph over 56 mph can drop mpg by 10–20%
  2. Maintain tyre pressure & alignment — under-inflation costs 2–5% fuel
  3. Avoid unnecessary idling — modern trucks burn 2–4 L/hour when stationary
  4. Use cruise control & gentle acceleration
  5. Regular servicing — clean air filters, injectors & EGR can improve 5–10%

Want to stop manual calculations? FleetBolt automatically tracks fuel fills, mpg trends, MOT reminders, service intervals and total cost per mile for every vehicle in your fleet.

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