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Statistics Norway’s quarterly index for scheduled bus transport put diesel-bus operating costs at 123.3 in Q2 2026, using Q4 2021 as the base of 100. The index was up 4.2% from a year earlier but down 0.9% from the first quarter.

The auto-diesel sub-index was 125.6, 9.0% above the same quarter last year and 3.7% below Q1. The index tracks changes in costs and can be used when bus contracts are priced; it does not measure fares, productivity or operators’ profit margins.