Fuel cost

Price the diesel.

Estimate trip fuel from the loaded van and today’s fuel price.

Route units

Start with your own figures.

Planning price data

Editable diesel planning defaults, not live pump prices. Every country shows its data source and check date below.

All leg prices shown in €/L · checked 19 Sep 2026

Country legs

One-way route.

720 mi one way

Country

RAC Fuel Watch, 17 Sep 2026; converted from £1.9286/L using ECB 14 Sep rate

Distance

Diesel price

€/L

£85

Country

European Commission Weekly Oil Bulletin, 17 Sep 2026

Distance

Diesel price

€/L

£434

Trip conditions

Rules of thumb, not measured facts.

These estimates multiply together and reduce your baseline economy. Your own brim-to-brim figures are better than any generic penalty.

Loaded vanPeople, water, bikes and the normal mountain-trip load.−7%Roof-mounted bikes or boxExtra frontal area and drag above the roofline.−12%Rear bikesA smaller drag penalty behind the van.−4%Mountain passesLong climbs, descents and slower road speeds.−8%Cold or high altitudeCold starts, winter tyres and thinner air can move the result.−5%Higher cruising speedA faster motorway day costs more fuel than a steady one.−10%

Trip settings

Set the baseline.

Steady motorway economy

Use your normal empty, steady-speed figure as the starting point.

mpg

Return journeyDouble each leg for the journey home.

Trip days

For the daily budget view.

days

People sharing

For the split-cost view.

people

Contingency buffer

A simple planning margin on the full fuel total.

GBP per EUR

Editable rate used to show the final total in pounds.

£/€

Estimated result

£571

Fuel there and back, including your buffer.

Diesel: 266 L
Return distance: 1,440 mi
Per person: £286
Per day: £57
Per mile: £0.40
Conditions extra: £102

Estimated real-world economy

24.6 mpg

Baseline: 30.0 mpg. The selected condition rules reduce the planning estimate; they are not a measured result.

Budget estimate only. Pump prices, weather, traffic and driving style can move this quickly. Your brim-to-brim measured economy is better than these rules of thumb.

Check tolls, vignettes and kit