Sales of the German company’s luxury cars in China have grown 28% so far this year after Mercedes spruced up its designs to give its cars a more sporty and upmarket feel, gaining traction with drivers in the world’s largest car market.

“I am confident that Mercedes in China will show a decent performance next year,” Troska, Daimler’s (DDAIF) board member responsible for Greater China, told reporters.

Sales in 2016 have been better than expected, reaching 429,000 cars, he said, adding demand for locally manufactured cars had helped boost registrations.

“Sales of the C-Class in the past year were phenomenal and we cannot build enough GLCs,” he said, adding the new E-Class would likely add momentum into 2017.

To keep sales going, Mercedes is considering local production of electric cars and batteries.

Building a battery factory in China is “among the options in the room,” Troska said, adding no decision had been made.

Troska declined to say whether Mercedes had set a date to start production of its EQ electric car in China.

Mercedes aims to have more than 10 all-electric vehicles in its portfolio by 2025 and has pledged to produce its EQ model by the end of the decade.

The EQ is based on a C-Class platform which is already being made in China and local authorities are encouraging production in the country.

“The strategic plan by the authorities is to push battery electric vehicles. We continue to invest in both battery electric cars and hybrid,” Troska said, adding the lack of battery charging infrastructure meant hybrids would be an alternative in the interim.

Efforts to bring down pollution have led Chinese authorities to come up with a new system of incentives to encourage sales of zero emission cars.

Chinese authorities are considering a system of trading credits for low polluting cars much like one in California, Troska said.

This month, China introduced a 10 percent tax on luxury cars costing more than 1.3 million yuan ($189,000).

But it is not expected to significantly dent sales, as customers were already prepared to pay high prices for some top-end Mercedes models such as the Maybach S-Class, with around 500 of the model selling each month, Troska said.

Overall, Chinese customers still prefer sedans to sport-utility vehicles (SUVs), although there has been a shift toward the smaller C-Class rather than the E-Class. Demand for SUVs continues to grow, Troska added.

Beijing Benz Automotive Co. (BBAC) has been producing Mercedes passenger cars since 2005. In 2015, more than two thirds of Mercedes vehicles in China were produced locally.