Here's a look at how key European markets are shaping up:
Europe's biggest car market will be the one to watch next year. Chancellor Angela Merkel unveiled a landmark climate package in September with subsidies aimed at boosting EV sales. The policy seems to be working, with Germany set to overtake much-smaller Norway as the leader in EV sales in the region this year.
Car buyers paying less than 40,000 euros ($44,000) are eligible for state and company handouts of as much as 6,000 euros. This could cost as much as 2.6 billion euros by 2025, BloombergNEF estimates.
The mechanism will likely influence the way German automakers market their next round of full-electric vehicles, according to Matthias Schmidt, a Berlin-based automotive analyst.
"The 40,000-euro list price is going to be a very important level for BEVs in the next one to two years," he said. VW will sell ID3 cars for under 30,000 euros, while BMW's electric Mini has an entry-level price of 32,500 euros. Both will offer consumers a domestic alternative to Tesla's Model 3.
Overall, German automakers plan to triple their electric-car offerings to 150 models by 2023 and invest 50 billion euros by 2024, according to Bernhard Mattes, head of the VDA automakers' lobby.
The government also wants 1 million charging points by 2025.
At ground zero of the Paris climate accord, France is backing policies to promote electric cars and charging stations as a way to lower carbon emissions and support the domestic industry. The government has to tread carefully after cars emerged as a flash point during the massive Yellow Vest demonstrations that began against a fuel tax. Protesters said it said would hurt low-wage earners who could not afford new vehicles, let alone electric ones.
In the nascent market, Renault's compact Zoe model has emerged as France's best-selling full-electric vehicle so far this year with a 43 percent market share, ahead of the Model 3 and Nissan's Leaf, according to consultancy Inovev. With 35,000 units sold in Europe in the first nine months of the year, the Zoe still lags far behind the Model 3, which registered nearly 63,000, according to BloombergNEF.
The state gives as much as 6,000 euros plus a conversion bonus to buyers scrapping an old clunker for an electric car. In the greater Paris region, the local government has further sweetened the offer, with subsidies reaching as much as 14,500 euros when central and regional government contributions are combined and the buyer has a low income.
The region's second-biggest car market is battered by Brexit uncertainty, so growth in electric vehicle sales has given some relief to the broader slump. Sales of full-electric cars more than doubled through November to 32,911 units, according to the Society of Motor Manufacturers and Traders. Yet they captured just 1.5 percent of the overall market.
The UK offers grants and rebates on pure electric vehicles of as much as 3,500 pounds after phasing out subsidies for hybrids last year. To be eligible, cars should be capable of traveling 70 miles without any emissions.
The SMMT auto industry lobby is also seeking government help for battery manufacturing investments, as well as incentives and infrastructure spending to help prop up demand.
The small European country is punching well above its weight on electric car sales. The government now plans to give tax advantages for at least the next five years as a way to reach a long-term goal to have only clean cars in the country by 2050.
For now, the Dutch system is a hotchpotch of incentives that includes exemptions on a road tax, and a much lower sales-tax rate applied to the first 50,000 euros of the price tag of an electric car.
Local governments have also put in place their own measures. In Amsterdam, electric car or delivery van buyers could get as much as 5,000 euros toward their purchase while investment in battery-powered buses or trucks could net as much as 40,000 euros per vehicle.