By William Boston 

BERLIN-- Volkswagen AG said Monday its head of quality assurance will leave the company, as Chief Executive Matthias Müller continues to shake up the company's senior management in the wake of its emissions-cheating scandal.

Frank Tuch, 48 years old, was appointed in 2010 by former CEO Martin Winterkorn, who resigned in September after U.S. regulators disclosed that Volkswagen had rigged diesel engines to cheat on emissions tests.

Mr. Tuch was among a group of Volkswagen executives who were suspended when Volkswagen launched its investigation of the emissions-cheating affair last year, according to people familiar with the matter, but he hasn't been charged with any wrongdoing.

Volkswagen said he resigned to pursue other interests.

He wasn't immediately available for comment.

Volkswagen said Mr. Tuch will be replaced by Hans-Joachim Rothenpieler, a board member at the company's commercial vehicle division in charge of technical development, effective Feb. 15.

Mr. Rothenpieler, 58 years old, will report to Mr. Müller.

The changes come as Mr. Müller carries out a sweeping restructuring of the company's top management, streamlining the management board and sharply reducing the number of executives who report to him directly.

Those who continue to report to the CEO now have a more narrowly defined strategic role. Decisions related to operations at the company's 12 brands are increasingly delegated to the brand management, allowing Mr. Müller and his leaner board to focus on larger strategic questions and enable faster decision making at the individual brands.

Mr. Rothenpieler will be succeeded by Harald Ludanek, 57 years old, as board member in charge of technical development at Volkswagen Commercial Vehicles.

Write to William Boston at william.boston@wsj.com

(END) Dow Jones Newswires

February 08, 2016 08:31 ET (13:31 GMT)