We know it's coming soon. In fact, BMW recently announced the official debut of the all-new 2019 Z4 roadster will happen this August at Pebble Beach in California. But when will production get underway, and where? Today we have both answers. Auto manufacturer Magna Steyr has confirmed Z4 production will get underway at its factory in Graz, Austria before the end of this year. Magna Steyr is a contract assembler, as it already builds the Jaguar I-Pace and E-Pace, Mercedes-Benz G-Class and BMW 5 Series at the same production facility.

The question that remains unanswered is where the new Z4's cousin, the reborn Toyota Supra, will be assembled. Remember, the Supra and Z4 were co-developed by Toyota and BMW and share the same platform as well as many other mechanicals. BMW hasn't been shy regarding the new Z4, recently releasing its own fairly detailed spy shots. The test mule shown, though camouflaged, was only lightly so, revealing styling awfully similar to the stunning Z4 Concept, itself having premiered at Pebble Beach last year. The closest we've seen, at least so far, to the production-ready Supra was the Gazoo Racing Concept that debuted at Geneva in March.

Toyota has yet to announce when exactly the new Supra will be unveiled, but we suspect it'll happen at either Los Angeles in November or Detroit in January. Geneva in March also should not be ruled out. Because of their vast similarities, we predict both the Z4 and Supra will be built alongside each other in Austria. It just makes sense. Magna and BMW began working together back in 2001 with the X3 SUV.