How about GM4G 15 engine? Is there any special technology? What are the disadvantages?

The building owner is GW4G 15 engine, right? This engine is a new engine GW independently developed by Great Wall Motor based on Mitsubishi technology.

GW4G 15 engine adopts double overhead camshaft 16 valve polymer intake manifold electronic throttle.

Variable valve timing (VVT) technology is adopted.

The disadvantage is that compared with the original 4G 15S and 4G 18, the later maintenance cost is higher.

However, the higher cost of this displacement engine can be ignored.