Ford Motor Company's (F 4.16%) Mustang Mach-E was the best-selling vehicle of any kind in Norway in May, the first full month of sales for the electric Ford in the country that buys more electric vehicles (EVs) per capita than any other.

Norway is a small market for vehicles by global standards, but the country has become a bellwether for EV sales because of a policy that exempts fully electric vehicles from the stiff taxes imposed on those with internal-combustion engines. 

Battery-electric vehicles made up just over 60% of all new cars sold in Norway in May, up from 43% a year ago, according to new figures from the Norwegian Road Federation. The Mustang Mach-E was the leader with 1,384 sold, for a roughly 10% share of the overall market. 

A red Ford Mustang Mach-E, a sporty electric crossover, with a Norwegian license plate.

Ford's electric Mustang Mach-E was the best-selling vehicle in Norway in May. The Tesla Model 3 was sixth. Image source: Ford Motor Company.

The Tesla (TSLA 2.99%) Model 3 was sixth on the sales list, trailing models including Toyota's (TM 1.90%) RAV4 hybrid and the electric Enyaq from Volkswagen (VWAGY 1.95%) brand Skoda. 

"Although this is obviously big for us, our realistic goal is that it should also be clearly visible on the statistics for several months to come," said Ford Norway CEO Per Gunnar Berg in a statement. 

"We have received several ships with cars to Norway in the last month and expect [steady supplies] to continue in the coming months," Berg said, emphasizing that while there is "great interest" in the Mach-E in other European countries, Ford is prioritizing deliveries to Norway for now.