Taking a car onto a ferry is the worst way to travel in terms of carbon emissions, new research has found, edging out first-class long-haul flights into the number-two spot. But travelling by ferry as a foot passenger is almost as clean as taking the train across the Channel.
Using data from Defra and EcoMetrica, Indigo Parking has calculated that taking a car onto a large Ropax (roll-on-roll-off) passenger ferry clocks up 387.4g CO2 per km, compared to 19.3g of CO2 per km for foot passengers. The Eurostar creates just 15.1g of CO2 per km.
Flying long haul in first class ranks second in the CO2 culprit list with 322.3g of CO2 per km, but slumming it in economy creates 80.6g – not far off the 75g created by electric cars charged off the mains.
However, powering your electric car with solar panels brings that score right down to zero grams, the same as riding a bike.
Travelling by international rail like the Eurostar creates a lot less than national or regional public transport such as the London Overground (51.3g), national rail (56.5g), Midlands Metro (71g) and the Tube (73.6g).
Walking is not on the list but we're assuming it's the best, if not exactly the fastest. Here's the full infographic – how to did you get to work this morning?