BEIJING/SHANGHAI (Reuters) - China has halved sales tax on small cars to revive growth in the world’s biggest automobile market, a move likely to provide a limited boost to carmakers including Volkswagen AG (>> Volkswagen AG), the company embroiled in a global diesel emissions scandal.

The cut in sales tax on cars with less than 1.6 litre engines takes effect on Oct 1 and lasts through the end of 2016.

Automobiles in this segment account for nearly 70 percent of total sales in China.

Volkswagen makes five of the 10 best-selling models in the category, although sales overall in China for the German automaker have turned soft this year, requiring the company to counter with generous incentives.

The tax cut, announced by cabinet late on Tuesday, sent shares of major Chinese automakers higher on Wednesday, with Great Wall Motor (>> Great Wall Motor Co Ltd) jumping as much as 8.7 percent in Shanghai by the afternoon. Its Hong Kong stock <2333.HK> surged as much as over 10 percent.

Shares of other carmakers like BYD (>> BYD Company Limited)<1211.HK> , BAIC Motor (>> BAIC Motor Corp Ltd) and SAIC Motor (>> SAIC Motor Corporation Limited) also rose sharply.

Analysts and other experts say the tax cut, a repeat of a similar policy move after the global economic crisis in 2008, was not likely to trigger a turnaround in the overall market.

"The fact that growth has remained weak this year in spite of a period of sharply falling retail prices suggests that poor consumer sentiment and economic uncertainty – rather than pricing and affordability – are to blame for weak demand," analysts at research firm Bernstein wrote in a research note.

It would likely provide some sales lift, nonetheless.

Yale Zhang, the head of Shanghai-based consulting firm Automotive Foresight, said the tax cut could lead to additional sales of about 100,000 vehicles per month for the rest of the year.

"I am expecting some 300,000 to 500,000 additional sales for the last three months of the year in total," he said. About 1.7 million cars were sold in China in August.

Rampant discounts and other incentives were already in place in the market and there has been a general decline in retail prices of cars in recent months, Zhang said.

"Some are assuming lower sales taxes for new car purchases are not going to help much, but a government move like this is so heavily and widely publicised by Chinese media that it is more effective than deals advertised by companies," he said.

Zhang said all top-selling sub-1.6-litre cars would get a lift from the tax cut, but especially SUV and multi-purpose vans that have already been selling strongly in China – namely the Great Wall Haval H6 and the Volkswagen Tiguan, both SUVs, as well as some MPV models from Wulin and Baojun, brands owned and operated by General Motors Co (>> General Motors Company) and its partner SAIC Motor Corp (>> SAIC Motor Corporation Limited).

VOLKSWAGEN'S FIVE

According to Automotive Foresight's data, China’s best-selling sub-1.6-litre vehicles are, from the top, the Wulin Hongguang MPV, VW’s New Lavida, the H6, the VW Jetta, the VW New Santana, the VW Sagitar, the Tiguan, the Hyundai Elantra, and the Toyota Corolla.

"All those cars are going to benefit from the tax cut," Zhang said.

"Last time, in 2009 and 2010, only Volkswagen and indigenous Chinese brands were able to reap benefits from the tax cut, but this time global brands all have cars with smaller engines and are ready."

Volkswagen has admitted cheating diesel emissions tests in the United States but Germany's transport minister says it also rigged tests in Europe, where it has much bigger sales, and it faces the worst business crisis in its 78-year history.

For Volkswagen, the tax cut offers much needed relief. China has accounted for more than half of VW’s profit in recent years. But the carmaker has begun reining in Chinese output, wages and other costs, according to industry source, as it tries to cope with a sharp slowdown in the world's biggest vehicle market.

Volkswagen’s Chinese joint venture, FAW-VW, is cancelling staff bonuses and cutting shifts at its plants near Changchun, northeastern China, people with knowledge of the matter said.

The bonuses being scrapped typically account for more than half of the assembly-line workers' take-home pay. Volkswagen's high-end Audi brand also said earlier this month it had eased back output at its Chinese plants, trimming the working week to five days from seven in response to lower demand for models such as the A6 saloon.

Car sales in China, the world's biggest market since 2009, were flat in the first eight months of the year and could contract in 2015 for the first time since the market took off in the late 1990s.

Many analysts expect auto sales growth to hold in low single-digits in coming years and global carmakers are cutting production and reining in wages and other costs.

Last month, China's central bank provided support for auto financing firms by slashing the amount of reserves they need to hold by 3.5 percentage points. However many analysts said this move was unlikely to lead to any sharp rises in sales given the relatively low auto financing rate.

(Additional reporting by Samuel Shen in SHANGHAI; Editing by Raju Gopalakrishnan)

By Norihiko Shirouzu and Kazunori Takada