CALL US TODAY: 415-597-9911 . Nissi Motors is a true dealer alternative independent service center for your Mercedes Benz, BMW, Mini, Porsche and other European cars as well as Japanese imports and domestics. Nissi Motors specializes in maintenance services, diagnosis, repairs, and tunings for all makes of Cars.br br br Our services are backed by our warranty to ensure superior quality and craftsmanship, we thrive to build our business on honesty, integrity and a good reputation.