Diesel Shock: Why Fuel Costs Are Driving European Freight Rates Higher in 2026

After a couple of relatively calm years for fuel prices, diesel is once again the number one line item keeping fleet managers up at night. According to IRU, Upply and Ti data, <cite index="1-15">EU diesel prices rose from an average of EUR 1.56 per litre at the end of Q4 2025 to EUR 1.96 per litre at the end of Q1 2026, a 26% increase, as the closure of the Strait of Hormuz pushed Brent above USD 100 a barrel.</cite> That is not a gradual creep, it is a shock that hit balance sheets in a single quarter.

The pain was not spread evenly. <cite index="1-16">French and German diesel prices drove the EU average higher, with increases of 27% and 35%, respectively, between December and March.</cite> Fleets running heavy volumes through those two markets absorbed the worst of it, and <cite index="1-8">EU average diesel prices have risen sharply, up by 31% in March alone.</cite> Given that <cite index="7-6">fuel still represents around 30 to 40% of operating costs</cite> for a typical haulier, a move of this size flows straight through to margins unless it is passed on.

The rate market is reacting in two distinct speeds. <cite index="1-5">Contract rates have risen steadily over the past three quarters</cite>, as shippers and carriers renegotiate baseline agreements to reflect the new cost reality. Spot rates moved more slowly at first, weighed down by soft Q1 consumer demand, but the direction of travel is now clear.

IRU's own market sentiment gauge backs this up. <cite index="1-1,1-2">The Road Freight Sentiment Index for Q1 stood at 16.9, up by 6.2 points from Q4 2025, indicating expectations for European road freight rates to rise over the next three months.</cite> Upply's chief executive summed up the shift bluntly, noting that <cite index="1-12">cost pressures are overtaking demand as the primary driver behind rate movements</cite>. Ti's head of commercial development added that <cite index="1-13">rising diesel prices push up freight rates and we now expect spot rates to rise sharply</cite>.

The forward-looking view is not reassuring for anyone hoping this is a one-quarter blip. <cite index="1-9">Even if demand softens, operators will be unable to absorb costs of this magnitude without passing them through to rates, meaning upward pressure on both spot and contract rates is likely to persist through at least H1 2026, regardless of the demand picture.</cite> Fuel itself is expected to be the dominant lever, since <cite index="1-7">fuel is expected to be the dominant driver of road freight rate changes in Q2 and beyond.</cite>

Diesel is not rising in isolation. Toll bills across several corridors jumped hard earlier this year, with Poland recording <cite index="7-21">an eyebrow-raising 40% price hike on its paid roads</cite>, while <cite index="7-22">the Czech Republic, France, Austria, Hungary and Belgium have also already increased road toll charges this year, with the Czechs and Austrians including the CO2 component in the price hike.</cite> A Polish industry survey found that <cite index="7-24">73% of road transport companies expect profitability to fall because of the latest toll increases</cite>, and that finding comes from the country whose fleets have historically led European transport performance.

Labour costs are climbing at the same time, particularly in the Central and Eastern European markets that supply a large share of the continent's driving capacity. <cite index="7-33,7-34">Eurostat data shows the EU Labour Cost Index rose 4% year on year in Q3 2025, though CEE countries were hit harder, with Poland at 16% and Lithuania at 11%.</cite> For a haulier running Polish or Baltic drivers on Western European lanes, fuel, tolls and wages are all moving in the same direction at once, which is an unusual and difficult combination to plan around.

This cost squeeze is landing right in the middle of the seasonal capacity crunch that hits European road freight every July and August. Current IRU figures put <cite index="18-7">Europe at 444,000 unfilled driver positions</cite>, and that gap widens further once regular drivers take their own summer holidays. Recent reporting on the summer bottleneck notes that <cite index="18-19">toll hikes including a 14.4% increase in Czechia, 7.7% in Austria and a roughly 40% spike in Poland are putting sustained pressure on spot rates, which typically jump 10 to 20% during peak summer weeks.</cite>

For fleet managers, that means the usual seasonal spike is happening on top of a structurally higher cost base, not instead of it. Locking in capacity and rates early, and building fuel volatility into quotes rather than treating it as a fixed assumption, matters more this summer than in most previous years.

The practical takeaway is that static fuel surcharge tables and quarterly rate reviews are too slow for a market moving this fast. Contracts pegged to a diesel index that is only updated monthly are already out of date by the time invoices go out. The operators coping best right now are the ones repricing against actual, current fuel costs rather than last quarter's average, and folding toll and border-crossing costs into the per-kilometre rate rather than treating them as an afterthought.

It is also worth reviewing which lanes are most exposed. Routes through France, Germany, Poland, Czechia and Austria are absorbing the largest combined hit from fuel, tolls and labour cost inflation described above, so those are the contracts worth revisiting first rather than waiting for a scheduled renewal date.

This is exactly the kind of moment where software-first tools earn their keep without needing a single sensor bolted to a truck. FleetlySolutions' per-kilometre pricing engine pulls in live DKV fuel data so quotes reflect what diesel actually costs today, not a stale monthly benchmark, which matters when fuel is moving 20 to 30% in a single quarter.

The route and toll planning module lets dispatchers see the combined toll and fuel cost of a lane before committing to a rate, across the Czech, Austrian, Polish and German networks where charges have moved the most this year. And because document OCR speeds up how quickly cost data from invoices, fuel cards and toll statements gets into the system, fleet managers can reprice contracts on a weekly basis instead of waiting for the next scheduled review, which is the difference between protecting margin and eroding it quietly all summer.