Sales of all plug-in cars, including hybrids, have surpassed 1m during the year in the UK and the largest 17 European markets, according to data collated by Schmidt Automotive Research.
During the whole of last year only 354,000 battery electric sales were recorded across the region.
In the UK, the sale of new cars that run solely on petrol or diesel will be banned in 2030 -- although new hybrids will be legal until 2035.
Other countries including France and Norway have also introduced plans to ban new internal combustion engines over varying timeframes. Tthe car industry still faces a steep uphill journey away from fossil fuels.
Total UK and European new car sales in the year to October were 13.3 million, the vast majority of which had petrol and diesel engines, which are expected to be more profitable than battery cars until about 2024.
British consumers bought more than 75,000 electric cars in the year to October, well over double the sales in the previous year, plus another 50,000 plug-in hybrids, but the UK market share of battery electric cars was still only 5.5 percent.
None of the 10 most popular cars in the UK in 2020 have been electric, although some are available as hybrid or plug-in hybrid models, such as the Mercedes A-Class.