The tachometer indicates the engine speed in revolutions per minute (rpm).
Use the tachometer to select the correct shift points and to prevent lugging and/or over-revving the engine.
CAUTION
Do not operate the engine within the tachometer's RED ZONE. This may cause severe engine damage.
Kia Cee'd JD Service Manual: Outside Rear View Mirror Components and components location
Component Location
1. Outside rear view mirror
...
Kia Cee'd JD Service Manual: CVVT (Continuously Variable Valve Timing) System Description and operation
Description
Continuous Variable Valve Timing (CVVT) system advances or retards the valve
timing of the intake and exhaust valve in accordance with the ECM control signal
which is calculated by the engine speed and load.
By controlling CVVT, the valve over-lap or under-lap ...