BMW has issued a technical service message to its dealers on 2013 model-year M5 and M6 models equipped with the S63Tü 4.4-liter twin-turbocharged V-8 engine. BMW M5 and M6 coupes and convertibles built between July and September of 2012 reportedly have a manufacturing defect related to the oil pump. The company has started to contact owners affected by the issue, according to a report from Reuters.
The defect could cause the engines to suddenly lose oil pressure, resulting in significant engine damage. Deliveries of cars equipped with the S63Tü engine have been halted until they can be inspected and repaired prior to customer delivery.
The National Highway Traffic Safety Administration does not have information about a formal recall campaign on its site at the time of this writing, and the number of vehicles affected by this campaign is unknown at this time. Owners can contact BMW Customer relations at: 800-525-7417, send an email to: firstname.lastname@example.org, or call the NHTSA Vehicle Safety Hotline at: 888-327-4236.
The new F10-based BMW M5 has won praise for its balance of performance and economy, topping its predecessor's already substantial power and performance while delivering significantly improved fuel economy. The BMW X5 and X6 M SUV models are also equipped with a version of the S63, but are not affected by the recall. The non-Tü engines in the X5 and X6 have a slightly lower compression ratio and boost level.