07/07/2026
By 2040, 40% more children could be killed each year. Reason, larger and larger cars. I
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‘Carspreading’: cars continue to grow in size
The average size of newly-sold cars keeps increasing every year. According to a new analysis of data covering the EU,
UK and Norway by T&E and Clean Cities:
● The average length of new cars keeps increasing by 1.2 cm a year, and
● Their average height keeps rising by 0.5 cm a year.
These new findings complement previous work showing that new cars keep getting 0.5 cm wider every year (2024),
and that bonnet height keeps increasing by 0.5 cm every year (2025).
Car size at a crossroads: the current ever-bigger trend v. vehicle right-sizing
This study compares two scenarios for car dimensions over the period 2026 to 2040.
Under the prevailing
ever-bigger trend (‘Current trend’), the average size of new cars continues to increase in line with trends since 2000.
Under a more balanced scenario (‘Right-sizing’), the average size of new cars steadily returns to 2015 levels. Key
findings for the period 2026 - 2040:
● Parking: Cities are set to lose 8.5% - 14% of their end-to-end on-street parking spaces by 2040 if the current
ever-bigger trend prevails
● Safety: There are around 2,600 additional deaths of vulnerable road users by following the current ever-bigger
trend, including 79 children. (By 2040, the increase in deaths of children walking widens to 40%.)
● Electricity: By 2040, the current trend would require an additional 22.5 TWh a year, comparable to 1,500 more
onshore wind turbines (compared to Right-sizing), increasing annual household charging bills by €7 billion.
Policy action to curb ever-bigger cars:
01 Cap bonnet height in new cars at 85 cm, and limit width to 192 cm (EU level, and UK)
02 Add vehicle dimensions to vehicle registration certificates (national governments / EU)
03 Ensure that regulatory advantages only go to small electric cars (not longer than 4.2 metres)
in revising car CO2 law (EU)
04 Rate the vision of children from the driver’s seat of new cars (Euro NCAP), and apply a Child
Vision Standard in law (EU, and UK)
05 Vary car taxes and parking charges by dimensions (national governments, and cities)