The rear-mounted Getrag 7-speed DCT is the SLS's most-cited weak point. Multiple owners report outright mechanical failure and known housing leaks, especially on early cars, with the advice being to secure an extended service contract since Mercedes does not offer one for the SLS. …
Getrag 7-speed dual-clutch transaxle failures and leaks
Mercedes-Benz SLS AMG (C197) · mechanical