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Private equity group Kohlberg Kravis Roberts is mulling a £1.8 billion ($2.9 billion) takeover bid for Trader Media Group, the company behind leading U.K. used car website Autotrader, The Sunday Times reports, citing unnamed sources.

KKR is believed to be one of many buyout firms eyeing Trader Media, which is 50.1%-owned by the Guardian Media Group PLC---with Apax Partners controlling the rest, says the report.

Germany's Bauer Media Group is also said to be a suitor for the parent company of Autotrader, it adds.

KKR and Bauer weren't immediately available for comment. Nor was Trader Media.

London Bureau, Dow Jones Newswires; +44 (0)20 7842 9320

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