Chinese electric car companies are outspending Tesla and traditional fuel-powered cars on research and development as a ratio to sales. Many Chinese automakers already spend as much as or more than their global peers on R&D as a percent of revenue, a significant increase from many years ago, Paul Gong, autos analyst at UBS, told CNBC. Geely's vice president of autos R&D, Ren Xiangfei, told CNBC late last month that while the company is looking to improve both hardware and software for cars, the latter can provide more differentiation.

BEIJING – U.S.-listed Chinese electric car companies are spending more on research as a ratio to sales than Tesla , according to CNBC analysis of the four automakers' first-quarter earnings.

It's a strategy for survival in China's cutthroat auto market, the largest in the world. New energy vehicles, which include both battery and hybrid-powered cars, have grown rapidly to more than 40% of sales. Many Chinese automakers already spend as much as or more than their global peers on R&D as a percent of revenue, a significant increase from many years ago, Paul Gong, autos analyst at UBS, told CNBC.

"In certain cases, even in terms of absolute dollars, it has bypassed." Of the four U.S.

-listed Chinese electric car companies, Nio ranked first, spending nearly 29% of revenue in the first three months of the year on research and development. That's far higher than Tesla's ratio of 5.4% in the first quarter and 4.

2% in the second. Elon Musk's company is .