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OBFCM vs WLTP Real-Life Vehicle Data
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About
Real-world data detailing emissions from new cars and vans across Europe, published as part of the European Commission's 2021 monitoring report. This dataset provides aggregated, real-life performance statistics derived from the monitoring of approximately 600,000 vehicles. The core purpose of this collection is to ensure that the CO₂ emissions measured during standardised laboratory testing (WLTP) remain relevant and representative of actual vehicle emissions in circulation (OBFCM), aligning with the requirements of Regulation (EU) 2019/631.
Brief Description
The data quantifies the performance gap between type-approval values and real-world usage for new light-duty vehicles registered in 2021. It serves as a vital tool for assessing the efficacy of current emissions regulations and tracking environmental impact within the transport sector. The figures allow regulators, manufacturers, and researchers to analyse key metrics like fuel consumption and CO₂ emissions under actual driving conditions versus test cycles.
Columns
The dataset includes 19 columns, primarily focusing on aggregated statistical measures (mean, quartiles, counts) grouped by manufacturer and fuel type. Key variables include:
- Manufacturer: The vehicle manufacturer (e.g., CHRYSLER, VOLVO).
- Fuel Type: The type of fuel used (e.g., DIESEL, PETROL).
- Number of vehicles: The volume of vehicles contributing to the aggregation.
- OBFCM Fuel consumption (l/100 km): Real-world fuel consumption measurements.
- WLTP Fuel consumption (l/100 km): Laboratory test cycle fuel consumption measurements.
- absolute gap Fuel consumption (l/100 km): The arithmetic difference between OBFCM and WLTP consumption values.
- percentage gap Fuel consumption (%): The relative difference in consumption values.
- OBFCM CO2 emissions (g/km): Real-world CO₂ emissions measurements.
- WLTP CO2 emissions (g/km): Laboratory test cycle CO₂ emissions measurements.
- absolute gap CO2 emissions (g/km): The arithmetic difference between OBFCM and WLTP CO₂ values.
- Note: All fuel consumption and CO₂ emission variables are also provided in 'weighted' formats.
Distribution
The information is made publicly available in CSV format, featuring both raw data and aggregated data. The sample aggregated file structure confirms 19 columns and includes statistics derived from 40 aggregated records. No missing or mismatched values were observed in the key columns of the aggregated sample. Updates to this data resource are expected to occur annually.
Usage
This data is essential for policy evaluation, especially regarding EU environmental legislation and transport decarbonisation goals. It is ideal for conducting robust gap analyses to measure the deviation between laboratory certification and actual vehicle performance. Furthermore, it supports studies comparing performance differences based on fuel type and manufacturer trends.
Coverage
The dataset covers new cars and vans registered within the European Union, focusing specifically on real-world emissions data reported for the year 2021.
License
CC0: Public Domain
Who Can Use It
- Environmental researchers: To model climate impact and analyse the efficiency of modern vehicle technologies.
- Government regulators and policy developers: To monitor compliance with Regulation (EU) 2019/631 and inform future emissions standards.
- Automotive industry analysts: For benchmarking performance metrics against competitors and tracking real-world consumer outcomes.
- Data scientists: For macro-economic and environmental studies requiring large-scale transport statistics.
Dataset Name Suggestions
EU 2021 Real-World Vehicle Emissions Gap Data
European Car and Van CO2 Aggregated Monitoring
OBFCM vs WLTP Real-Life Vehicle Data
European Commission Vehicle Emissions Performance 2021
Attributes
Original Data Source: OBFCM vs WLTP Real-Life Vehicle Data
QUALITY