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CleanAir Created with Sketch.
8.0 10 Clean Air Index
EnergyEfficiency Created with Sketch.
4.4 10 Energy Efficiency Index
Laboratory TestsHCCONOxPN
7.49Cold test*
2.73Warm test#
2.73Eco Mode#
2.73Sport Mode#
Road test
6.47On-Road Drive*
* Adapted regulatory test # Additional Green NCAP tests
  • n.a.
  • good
  • adequate
  • marginal
  • weak
  • poor


In updated Euro 6d-Temp form, the Fiesta shows much better control of pollutant emissions than the earlier Euro 6b-compliant version. Particulate number is marginal in the cold test and poor in the high-load highway test but, otherwise, pollutants are well or adequately controlled.

Laboratory TestsEnergy Efficiency
5.910Cold test*
1.93Warm test*
1.93Eco Mode#
1.93Sport Mode#
Average consumption7.1l100 km
Worst-case consumption8.3l100 km
* Adapted regulatory test # Additional Green NCAP tests
  • n.a.
  • good
  • adequate
  • marginal
  • weak
  • poor


Energy efficiency is marginal in all of the laboratory tests.

Greenhouse Gases**

Cold test*
Warm test#
Eco Mode#
Sport Mode#
**For indication only. The assessment of greenhouse gases does not currently form part of the rating.


  • Year of Publication 2019
  • Emissions Class Euro 6d-Temp
  • Mass 1,293 kg
  • Engine Size 998 cc
  • Engine Power/Torque 92 kW/170 Nm
  • Tyres 205/45 R17
  • Published CO2 136 g/km

Our verdict

The Fiesta is tested here with the latest version of the 1.0 turbocharged EcoBoost engine. This version complies with the latest emissions level (Euro 6d-Temp) and, as well as a three-way catalyst, employs a particulate filter to reduce emissions of this pollutant. In general, this works well: pollutant emissions are well controlled with good results for hydrocarbons, oxides of nitrogen and carbon monoxide. Performance is generally marginal in terms of particulate emissions and is poor in the high-load highway test, but the low emissions of other pollutants contribute to a high Clean Air Index. Performance on the road is similar to that in the laboratory tests. However, the particulate filter seems to have a negative effect on energy efficiency and fuel consumption. An average measured consumption of 7.1 l/100 km is quite high for an engine of this size and type. Overall, the engine achieves a reasonable compromise between efficiency and minimizing pollutant emissions.