Claimbrook

Research reports

Evidence-led studies, published from immutable reports that an independent reviewer approved.

• q How Far the Official Fuel-Economy Rating Moves Inside One Nameplate q

  Across 3,621 groups of model-year 2015–2026 vehicle configurations matching on make, nameplate, model year, fuel type, drivetrain and transmission, 24.0% still differ by at least 5 rating points or a fifth in the official combined figure, and among MPGe-rated groups that share is 60.6%.

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  q Vehicle records q Published August 12, 2026 q

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