A steamy bit of writing featuring engine oil, Bugattis and Volkswagens won the dubious honour of the Literary Review’s ‘‘Bad Sex in Fiction’’ award. Judges yesterday said Aniruddha Bahal’s novel, Bunker 13, merged the styles of Andy McNab, a British writer who specialises in special forces yarns, and Jilly Cooper, mistress of the horse and horseplay novel. Bunker 13 was described as a thriller about a reporter going undercover to expose evil-doing in Jammu and Kashmir. Monica Ali’s novel insults us: Bangladeshis