Black Boxes will be Mandatory in Cars from 2021

Between 2021 and 2022, absolutely all new vehicles will have to equip compulsorily and in compliance with European regulations, two new devices: the so-called black boxes. One of them will have the function of monitoring the actual fuel consumption of the vehicle, while the other will record all the trip data. We have various types of cars available at auto for trade.


As of January 1, 2021, vehicle manufacturers will have to include the OBFMC (On-board Fuel and / or Energy Consumption Monitoring) in all new cars, a device that will be responsible for monitoring fuel consumption. Or electric vehicles, with a margin of error of 5%.

This black box will provide complete information on the total consumption, the fuel flow, the volume consumed according to the distance traveled, the speed and the engine speed. It should be noted that all this data can be consulted at any time and that it will also be saved throughout the life cycle of the car, that is, from its manufacture and until its subsequent recycling.

The main objective of the OBFMC is to determine if vehicle manufacturers have made any adjustments to improve the results in the tests of the WLTP cycle, the new regulation for measuring consumption and emissions. However, this new black box will also allow drivers to know the real consumption of their vehicles.

On the other hand, it should be noted that all the information collected will be anonymous, although it remains to be clarified how often the data will be consulted. It also remains to be defined what will happen to plug-in hybrids and micro-hybrids, which are equipped with the DGT’s Zero Emissions label, although they use the combustion engine more often than the electric one, something that the OBFCM will highlight.


In 2022, all new cars will have to equip a second black box that will record all the trip data, so that they can be used in the event of a traffic accident. This system will be placed under the driver’s seat, bolted to the chassis, and will be very similar to the black box carried by airplanes, although it will not record images or audios.

If an accident occurs, this device will record all data during the 30 seconds before the accident and the 5 after. In this way, it will be possible to know the speed, the behavior of the vehicle, the state of the security systems, the location, the steering movements, the acceleration and the deceleration of the car. The accident investigator will only have to connect the black box to a computer to obtain all the data.

After the introduction of these black boxes, the European Union hopes that the safety of vehicles will be considerably improved and that all this information will also have a positive influence on drivers, who by carrying a device that will carry out a constant evaluation of their driving style, try to improve your handling of the car.

Author: Web Spangle

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