Is the car still under warranty ?

这辆汽车仍在保修期内吗？

This product is under warranty.

此产品在保修期内。

Is the car still under warranty?

这辆汽车仍在保修期内吗？

The machine is still under warranty.

这台机器仍在保修期内。

This TV set is still under warranty.

这部电视机仍在保修期中。