As Volkswagen continues to try to dig itself out from under its global diesel-emissions scandal, the German automaker has now run into more issues involving data manipulation, this time in South Korea. Volkswagen AG's South Korea division is alleged to have manipulated more than three-dozen reports to South Korea's National Institute of Environmental Research, Bloomberg News says, citing an official familiar with the process. The reports were on both emissions and noise levels for 26 models, including the Volkswagen Golf and Audi RS7.

The allegations were made after South Korean officials raided the offices of VW's Seoul offices. A VW spokeswoman in Korea said the company will respond to the probe but declined to comment further, according to Bloomberg. The Seoul Central District Prosecutors' Office will start summoning VW officials to Seoul starting next week.

South Korea continues to be a sticking point for VW. Earlier this year, South Korea rejected VW's recall plans for about 125,000 vehicles. South Korean officials were also going to fine VW $12.3 million – a proverbial drop in the bucket compared to the $18 billion global tab VW is racking up from the scandal – and was possibly going to press criminal charges against some local VW officials.

Meanwhile, VW is making some progress on the address the diesel-emissions scandal, which broke last September. Earlier this month, VW recently received approvals from German regulators for its recall plans to fix the so-called "cheat" software that manipulates emissions levels on diesel vehicles on about 800,000 vehicles. VW, whose "cheat" software was installed in as many as 85 million diesel vehicles worldwide, says those vehicles will "meet all legal requirements" after receiving the company-funded retrofit.

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