Skip to main content

Cars emit less CO2 per passenger km than buses

UK government emissions data shows that buses outside of London emit an average of 221g/km CO2e (CO2 equivalent) per passenger km compared to a small petrol car (201g/km), a small diesel car (172g/km) and a medium diesel car (215g/km). A car containing two people would obviously halve these figures. London buses, because of their higher average occupancy, fare better at 102g/km.
May 4, 2012 Read time: 1 min
UK government emissions data shows that buses outside of London emit an average of 221g/km CO2e (CO2 equivalent) per passenger km compared to a small petrol car (201g/km), a small diesel car (172g/km) and a medium diesel car (215g/km).  A car containing two people would obviously halve these figures. London buses, because of their higher average occupancy, fare better at 102g/km.

"Perhaps those who criticise lone car drivers should turn their attention to empty off-peak buses instead,” says Paul Biggs, environment spokesman at the Association of British Drivers. “Although buses provide an important public service, even London can only manage an average occupancy of around 15 passengers. Modern efficient cars outperform buses not just for CO2 emissions, but for genuine pollutants as well," Biggs adds.

Related Content

  • UK trialling hazard warning technology
    November 26, 2024
    Results from a project by the UK’s department of transport and AECOM – using Heads-Up technology from Acusensus, has underlined scale of distracted driving and lack of seatbelt use.
  • Ma(r)king the roads readable for self-driving cars
    December 20, 2021
    CAV, V2X, C-ITS, CCAM – the acronyms are differing, but they all have in common that they denominate the linking of road infrastructure and vehicles with the aim to improve traffic flow, reduce emissions and make traffic safer and our journeys more convenient.
  • China's economic growth fuelling vehicle increase
    February 21, 2012
    China is at a turning point in many ways. The country's continuing economic growth is fuelling a massive increase in vehicle numbers, with no signs of slackening. This is most acute and most visible in major cities such as Beijing and Shanghai, where traffic jams are now a frequent occurrence
  • Highways: environmental problem or environmental enhancement?
    March 21, 2016
    Highways need not be a blight on the countryside that many people, urban planners included, believe they will always be. By Bram Miller, director, and Martin Broderick, environmental consultant, at Ramboll Environ While the world’s highway networks bring undoubted economic and social benefits, they are generally perceived to lead to negative environmental impacts. Some may consider this an unfair reputation, but it is difficult to argue that in the majority of cases both the construction and operation of