Learn English: Tesla's Ups and Downs: China Boom, Europe Bust (normal)

Tesla is having a great time in China, with a big jump in car sales last week.

But things aren't looking so good in Europe, where Tesla's sales are lower than last year.

This is the first time Tesla has had two quarters of lower sales in a row since they became a big name in cars.

The company says the reason is that they haven't released any new models and there's lots of competition in the European market.