Identification and evidence
A Vauxhall/Opel repair manual lists Motronic ML5.1 for later 2.0-litre eight-valve examples. A separate ECU repair catalogue also uses the label ML5.1 with VW Digifant II. Do not assume those references describe identical hardware.
Identification and scope
Retain the complete ECU designation, Bosch and vehicle-manufacturer part numbers, engine, vehicle year and market, hardware and software identity. Similar names do not establish shared pin assignments, calibration files or programming procedures. Examples above are source-scoped and are not a complete fitment list.
Source accessed 10 November 2026.