Which shortcoming is Iveco's victory or pride?

Iveco Ou Sheng has few shortcomings. Iveco Ousheng hasn't found any common faults yet, and everything is normal:

1, the appearance and interior of Iveco Osen are synchronized with the Italian cash Iveco. Compared with the domestic Iveco Baodi series, it was designed and transformed from China on the basis of the Ao series production line aided by Italy in the 1990s, and it really has obvious advantages in beauty, comfort and technology.

2. The gearbox still uses domestic 5-speed and 6-speed manual ZF gearboxes, and the 5-speed manual gearbox still exists in China.

I am proud of the noise during normal driving, but after driving for a few minutes, the noise suddenly disappeared. When refueling, the cylinder knocks and the exhaust gas smokes and burns.