In a memo to U.S. retailers obtained by Automotive News, McLaren said deliveries of its plug-in hybrid, the Artura, are delayed on average about four months as the British automaker institutes "enhanced testing procedures" to improve quality.
McLaren said the measures provide "additional checks and testing in our quality control procedure."
Spokesman Roger Ormisher confirmed the delay.
"To implement these quality control procedures, we have temporarily slowed production," he said.
A McLaren retailer said customers planning to take delivery in May can now expect to do so in September.