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10.0 10 Clean Air Index
9.3 10 Energy Efficiency Index
9.6 10 Greenhouse Gas Index
Laboratory Tests NMHC NOX NH3 CO PN
10.010 Cold Test
10.010 Warm Test
10.010 Highway
10.010 Cold Ambient Test
Road Test
10.010 On-Road Drive
5.05 On-Road Short Trip
8.08 On-Road Heavy Load
5.05 On-Road Light Load
2.02 Congestion
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  • n.a.
  • good
  • adequate
  • marginal
  • weak
  • poor

Comments

With no tailpipe emissions, the electric BYD ATTO 2 naturally scores the full 10 points in the Clean Air part of the assessment.

Laboratory Tests Energy
10.010 Cold Test 17.7kWh100 km
10.010 Warm Test 17.5kWh100 km
8.510 Highway 30.4kWh100 km
9.110 Cold Ambient Test 26.6kWh100 km
Consumption Driving Range
Average 21.9kWh100 km 244km
Worst-Case 30.5kWh100 km 164km
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  • n.a.
  • good
  • adequate
  • marginal
  • weak
  • poor

Comments

In the standard WLTC+ Lab Tests, the recorded values are well below Green NCAP's 20 kWh/100 km lower threshold, considering the charging losses. In the Highway Test and in the -7°C Cold Ambient Test the energy demand increases to 30.4 and 26.6 kWh/100 km, respectively. The capacity of the air-conditioning system is improved by adding a new heat pump direct cooling and heating system to the traditional high voltage PTC heater. Additionally, the waste heat of the motor can be used to heat up the battery and the cabin.

Greenhouse Gases CO2 N2O CH4
10.010 Cold Test
10.010 Warm Test
9.010 Highway
9.610 Cold Ambient Test
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  • n.a.
  • good
  • adequate
  • marginal
  • weak
  • poor

Comments

The Greenhouse Gas (GHG) Index is based on a Well-to-Wheel+ approach, meaning that the GHG emissions related to the supply of energy are added to those of the tailpipe. Following this approach, the estimated GHG emissions of the fully electric ATTO 2 originate only from the upstream processes of electricity supply – ca. 50 g CO2 eq./km in the standard Lab Test and reaching 86 g CO2 eq./km in the Highway Test. The amount of upstream GHG emissions depends on the consumption and on the GHG intensity of the electricity used. Lower CO2 energy mix increases the environmental advantages of EVs.

Our verdict

The ATTO 2, BYD's coming soon to the European market, is a compact SUV with front wheel drive and a maximum power of 130 kW. Its usable battery capacity is only 42.4 kWh, which contributes to the low mass of 1,590 kg. The powertrain configuration makes clear that the vehicle targets those who are not looking for a long range EV or enhanced off-road capabilities, but want a practical car for everyday use. This observation is confirmed by the relatively high consumption figure in the Highway Test, while the Cold Ambient Test electricity demand pleasantly surprised with 26.6 kWh/100 km. It is worth mentioning that, starting from -7°C, the cabin temperature measured at the front passenger's head rest reached 18°C in about 200 seconds before further increasing to the requested 23°C. This is a good result, compared to some other vehicles tested by Green NCAP. The On-road Drive was performed in cloudy weather with 18°C average ambient temperature and recorded 17.8 kWh/100 km, with the Short Urban Trip requiring 11.5 kWh/100 km. The available battery capacity allows the ATTO 2 to go for 164 km in the Highway Test and approx. 300 km in real world with similar conditions to the tested ones. 84% of the electricity taken from the wallbox (11 kW charging) is available at battery output, which is a low value compared to a new fleet average of 88‑89%. Improvements here can help the ATTO 2 reduce its consumption and improve the driving range. With an Average Score of 96%, the new compact BYD easily collects all 5 Green stars.

Specifications

  • Tested Car LC0CE4CB5R499XXXX
  • Publication Date 12 2024
  • Vehicle Class Small SUV
  • Emissions Class AX
  • Tyres 215/60 R17
  • Mass 1,590 kg
  • System Power/Torque 130 kW/290 Nm
  • Declared Battery Capacity 42.4 kWh
  • Declared Driving Range Overall 312 km City 463 km
  • Declared Consumption 16 kWh/100 km
  • Heating Concept Waste heat & PTC & Heat pump