The tachometer shows engine speed in thousands of revolutions per minute (rpm).
CAUTION
Do not run the engine with the tachometer needle in the RED ZONE. This may cause severe engine damage.

NOTE
When the tachometer needle enters the STRIPED ZONE, this indicates to the driver that the gears should be shifted before entering the RED ZONE.
Speedometer, Odometer, Trip Meter and Trip Meter Selector (Without Multiinformation
Display)
Engine Coolant Temperature Gauge (Without Multi-information Display)Mazda 6 Owners Manual: No.8 no cool air
When performing an asterisked (*) troubleshooting inspection, shake the
wiring harness and connectors while performing the inspection to discover
whether poor contact points are the cause of any intermittent malfunctions.
If there is a problem, check to make sure connectors, terminals ...
Mazda 6 Owners Manual: Outside the United States/Canada
Government regulations in the United States/Canada require that automobiles meet
specific emission regulations and safety standards. Therefore, vehicles built for
use in the United States/Canada may differ from those sold in other countries.
The differences may make it difficult or even impossi ...