Chevrolet 2007 Optra Owner's Manual page 240

Certification Label
Label Example
A vehicle specific certification label is attached to
the center pillar, near the driver's door latch.
This label tells you the gross weight capacity of
your vehicle, called the Gross Vehicle Weight
Rating (GVWR). The GVWR includes the weight
of the vehicle, all occupants, fuel, and cargo.
Never exceed the GVWR for your vehicle, or the
Gross Axle Weight Rating (GAWR) for either
the front or rear axle.
And, if you do have a heavy load, you should
spread it out. See "Steps for Determining Correct
Load Limit" earlier in this section.
240
CAUTION:
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Do not load your vehicle any heavier than
the Gross Vehicle Weight Rating (GVWR),
or either the maximum front or rear Gross
Axle Weight Rating (GAWR). If you do,
parts on your vehicle can break, and it
can change the way your vehicle handles.
These could cause you to lose control
and crash. Also, overloading can shorten
the life of your vehicle.
Notice: Overloading your vehicle may cause
damage. Repairs would not be covered by your
warranty. Do not overload your vehicle.
If you put things inside your vehicle — like
suitcases, tools, packages, or anything else — they
will go as fast as the vehicle goes. If you have to
stop or turn quickly, or if there is a crash, they will
keep going.