TRUE Rating Tool

How does your car measure up?

The TRUE Rating Tool is a three-color categorization system designed to concisely inform those in Europe of the magnitude of a vehicle’s emissions over its lifetime under a wide range of operating conditions and driving behaviors.

While new vehicles are by definition certified to emissions levels at or below the legal limit, real-world measurements are often much higher.

Higher emissions could be due to a variety of reasons:

• Ageing of emissions control systems
• Software that increases emissions during normal driving (aka defeat devices)
• Malfunction of engine or emissions control parts 
• Driving conditions outside of those covered by the regulations. 

Emissions can also be affected in a positive way by recalls and retrofits. Our ratings reflect all these factors

What do we capture?

The TRUE Rating Tool currently covers nitrogen dioxide (NO_x) emissions from passenger cars measured across Europe and differentiates vehicle models by European Union emissions standards (Euro standards) from Euro 1 through Euro 6. Improvements to Euro 6, known as Euro 6d-TEMP and 6d, for which on-road testing became mandatory for type approval, are also reflected in the results.