The source of data is UK Vehicle Certification Agency, of the United Kingdom Department for Transport and the United Kingdom’s national approval authority for new road vehicles, agricultural tractors and off-road vehicles.
This dataset contains cleaned and organized data about the following car emissions: CO2, CO, hydrocarbons, oxides of nitrogen, particulate matter and external noise. In the same time it contains data about fuel and/or electricity consumption and the cost associated. According to UK Vehicle Certification Agency the majority of new Euro 4 cars traded on UK market, starting with each of the year of the period 2000-2012, are described in this dataset. The variables values are obtained from official tests, which are required before a model of car may be offered for sale. The values are listed for most new petrol and diesel cars on sale in the UK as well as for some cars powered by alternative fuels (Liquefied Petroleum Gas or Compressed Natural Gas). Values are also listed for some hybrid vehicles, which use both electric motors and internal combustion engines, and for pure electric cars.
The fuel related data are those published by the Department of Energy and Climate Change for March, and appear on the ‘efficiency labels’ that can be seen in car showrooms. The fuel cost is given for comparison purposes, for any given vehicle it will depend on the actual fuel consumption achieved and the price you pay for fuel. Because fuel cost was measured at 6000 or 12000 miles, to have a unique measure and keep the estimation as precise as possible the fuel cost estimated at 12000 miles was halved.
Missing data is represented in the dataset by 0 length string (empty cells). The raw data was collected in a controlled environment and represents estimates of above-mentioned pollutants levels.
This dataset doesn’t include data about vans, 4x4s or pickups.