Evidence · Fleet trials

Municipality of Frederikshavn — Denmark

On a Scania truck operated by the Municipality of Frederikshavn, the two measurement periods cannot be compared directly — the vehicle was driven far harder during the NanoEFX period. After normalising both periods to the same drive-mode distribution, the analysis indicates roughly 5% lower fuel consumption. This is a model-based correction, not a directly measured saving.

Model-corrected analysis Municipal heavy vehicle
A haulage truck driving into a warm sunset on the motorway
Denmark, 2026: one truck, two periods — and a drive-mode distribution that changed so much between them that the raw litres-per-100-km figures stopped being comparable.
≈5.3%Mode-corrected improvement (modelled, not measured)
4,190 kmReference period without NanoEFX
1,484 kmTest period with NanoEFX
4% → 21%Share of driving in Power mode between the periods
Municipality of Frederikshavn trial — at a glance
OperatorMunicipality of Frederikshavn, Denmark
Vehicle1 Scania truck
Carried out withScania — drive-mode assessment supported by dialogue with the Scania Driver Academy
Reference period4,190 km without NanoEFX
Test period1,484 km with NanoEFX
Raw comparisonThe NanoEFX period appears marginally worse — and is not a valid comparison
Corrected result39.3 → 37.2 l/100 km ≈ 2.1 l/100 km, about 5.3%
StatusModel-based correction — explicitly not final documentation of effect
The result

Every measurement, not just the best one

Municipality of Frederikshavn — Why the periods are not directly comparable: the distribution across drive modes shifted sharply. Power mode uses more fuel than Standard; Economy mode uses less.
Drive modeReference period (without)Test period (with NanoEFX)Effect on fuel use
Power4%21%Assumed +15% vs Standard
Economy48%4%Assumed −10% vs Standard
Standard48%76%Baseline
Result after normalising both periods to the reference distribution39.3 l/100 km37.2 l/100 km≈ −5.3%
Municipality of Frederikshavn — how it was measured

Method before result

The vehicle was driven normally in municipal service across both periods. Fuel and distance were taken from the operator’s records, and the analysis was carried out together with Scania.

The raw numbers alone would have been misleading in our own disfavour: during the NanoEFX period the truck spent five times more of its time in Power mode and almost none in Economy mode. Power mode holds gears longer and runs to higher engine speeds; Economy mode does the opposite. Comparing the two periods without accounting for that would compare two different jobs.

The correction normalises the NanoEFX period back to the reference period’s mode distribution, using an assumed +15% fuel use for Power mode and −10% for Economy mode relative to Standard. The Scania Driver Academy confirmed the direction and rough magnitude of those mode effects — that Standard versus Economy is normally a small difference, while Standard versus Power can be significant.

How we measure, and what makes a fuel trial credible →

Municipality of Frederikshavn — what this result does not prove

The limits of this trial

We publish these next to the result rather than in a footnote. If a limitation would change how you read the number, you should read it at the same time as the number.

Known limitations

  • The raw data does not show a saving. Taken at face value, the NanoEFX period looks marginally worse than the reference period. The result exists only after the mode correction.
  • The correction is a model, and the assumptions drive the outcome. Scania supported the direction of the mode effects, not the specific +15% / −10% figures used in the calculation.
  • The test period covers 1,484 km against a 4,190 km reference — a short sample for a heavy vehicle.
  • It is a single vehicle, with no control vehicle running in parallel.
  • The analysis was produced by ECO EFX Solutions, not by the municipality or by Scania.
  • The source document states its own conclusion plainly: the figure should be read as a model-based correction and not as final documentation of effect. We repeat that here rather than quietly dropping it.
Municipality of Frederikshavn — what it means

Reading this evidence in context

This trial is worth publishing precisely because the raw result was unfavourable. Correcting for how a vehicle was actually driven is standard practice in fleet analysis, and skipping the correction would have understated the product just as much as skipping the caveat would overstate it.

What it demonstrates well is a method: if the operating pattern changes between periods, a before-and-after fuel comparison alone is not evidence — in either direction.

What would settle it: the raw fuel and mode data, so the sensitivity of the result to the assumptions can be tested, plus a written confirmation of the mode factors from Scania.

Municipality of Frederikshavn — FAQ

Questions operators ask about this trial

Did the truck actually use less fuel?
Not in the raw figures — taken directly, the NanoEFX period looks marginally worse. But the truck was also driven considerably harder in that period, with Power mode rising from 4% to 21% of driving. After normalising both periods to the same mode distribution, the calculation indicates roughly 5% lower consumption. That is a modelled result, not a measured one.
What was Scania’s role?
The trial was carried out with Scania, and the assessment of the drive modes is supported by dialogue with the Scania Driver Academy, which confirmed that the difference between Standard and Economy mode is normally small while the difference between Standard and Power can be significant. Scania did not certify the 5.3% figure itself.
Why publish a result that needs this much explanation?
Because the alternative is worse. Quoting 5.3% without the correction behind it would be indefensible the moment anyone reads the underlying document — and quoting nothing would hide a legitimate methodological point. A fleet result that changes when you account for how the vehicle was driven is exactly the kind of detail an operator needs to know before designing their own trial.
How should we read this compared with the Waste Services trial?
Waste Services is a direct measurement across five vehicles with an uncorrected result; Frederikshavn is a single vehicle whose result only exists after a modelled correction. They are different classes of evidence, and we label them that way rather than averaging them into one number.
Municipality of Frederikshavn — where this data comes from

Provenance

Operator
Municipality of Frederikshavn, Denmark
Carried out with
Scania; drive-mode assessment supported by the Scania Driver Academy
Analysis by
ECO EFX Solutions GmbH
Document
Case study — Municipality of Frederikshavn, Denmark: a realistic scenario for a Scania truck, mode-corrected methodology
Measurement periods
February to April 2026
Last checked
15 August 2026
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