At €1.50–1.80/litre diesel and a heavy truck consuming 30–35 litres per 100 km, fuel is the largest single variable cost in a trucking operation. For a 10-truck fleet averaging 4,000 km/month each, monthly fuel spend is approximately €18,000–25,000. A 20% reduction is €3,600–5,000/month — €43,000–60,000/year.
The savings don’t come from one thing. They come from four separate levers, each contributing a portion of the total reduction.
Lever 1: Route Optimization (8–15% fuel reduction)
Shorter routes burn less fuel. AI multi-stop optimization reduces total distance by 15–25% compared to manually-planned routes. Less distance means less fuel, proportionally. For a DACH carrier doing regional distribution, optimized routing is typically the single largest fuel saving lever.
Lever 2: Idle Time Reduction (3–5% fuel reduction)
A heavy truck idling consumes approximately 3.5–4.5 litres/hour. Drivers idle for warmup, customer wait time, break time with engine running, and traffic. GPS monitoring with idle time alerts — both real-time notifications to drivers and weekly reports to dispatchers — reduces fleet idle time by 20–40% in most implementations. At 1 hour/day average idle per truck: 10 trucks × 4 litres/hour × 20 days/month = 800 litres/month just from idle reduction.
Lever 3: Driver Behaviour Monitoring (4–8% fuel reduction)
Harsh acceleration and hard braking are the two driver behaviours most directly linked to excess fuel consumption. Telematics monitoring with driver scoring — and importantly, driver visibility into their own scores — consistently reduces harsh event frequency by 30–50%. Smoother driving also reduces brake wear, compounding the maintenance savings.
Lever 4: Fuel Card Integration (1–3% fraud/leakage reduction)
Fuel card integration with your TMS correlates fuel card transactions with GPS data: was the truck at the stated fuelling location when the transaction occurred? Does the fuelling volume match the tank capacity and expected consumption? Anomaly detection catches both driver fraud and card skimming — which affects approximately 3–5% of fleet fuel cards that aren’t actively monitored.
RouteWerk delivers route optimization, idle time monitoring, driver behaviour scoring, and fuel card integration in a single platform. The claimed average fuel reduction is 20% — across a fleet that size, the savings fund the platform cost many times over. Plans from €149/month.
