VW 507.00 motor oil in 5w-30 is a specification for VW, Audi and Porsche (C-30) that is a full synthetic, made in Germany, PAO and Ester based (group 4 and 5) synthetic oil. It was designed and engineered for extended oil changes, to be at least 30,000 KM rated motor oil.
Germany has the completely original different specification for the term "synthetic" motor oil... you can learn more about it if you look at the Castrol vs Mobil 1 lawsuit. Castrol synthesized petroleum based base stock and called it "Synthetic" motor oil, against the prevailing description of synthetic oil as originally created, designed and manufactured by Mobil chemical engineers.
Germany does not allow Group III motor oils, like Castrol and Shell Rotella, to be classified as or marketed as synthetic motor oils, unlike other European nations.
That German car companies still specify German made and produced oils for their cars makes one wonder...
What I do know is that I change my oil every 10k miles, and at $9 a liter, and 8 liters required, it's a bite out of the wallet when it needs doing. Always ends up German made oil, just the way it is.
I've sent a few samples of Mobil 1 Delvac 1 5w-40 diesel motor oil off for testing, with 15,000 miles on it, 3 or 4 times, and every time, when run in my 2002 VW Jetta TDI diesel, I was advised the oil truly looked fine, and that another 5 to 10,000 miles was still in the motor oil, based on metal and traace element levels. For reasons unknown, my motor always exhibited low soot, plenty of base additive left and 50 ppm levels of iron on 15k mile oil and filter change intervals... 80% of my mileage being freeway or highway cruising, easy on motor.