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Audi A4 (B9) 2016-2022 Owner's Manual: Tachometer

The tachometer (1) displays the engine speed in revolutions per minute (RPM). The beginning of the red zone in the tachometer indicates the maximum permissible engine speed for all gears once the engine has been broken in. Before reaching the red zone, you should shift into the next higher gear, select the "D" or "S" selector lever position, or remove your foot from the accelerator pedal.

Engine speed limitation

If the indicator light turns on, the engine will be automatically limited to the RPM displayed in the instrument cluster. This will protect the engine components, for example during a cold start or from overheating.

The engine speed limitation is deactivated if you release the accelerator pedal while the engine is at normal operating temperature.

If the engine speed limitation was activated by an engine control malfunction, the indicator light also turns on. Make sure the engine speed does not go above the speed displayed, for example when downshifting. Drive to an authorized Audi dealer or authorized Audi Service Facility immediately to have the malfunction corrected.


The needle in the tachometer may only be in the red area of the gauge for a short period of time before there is a risk of damaging the engine. The location where the red zone begins varies depending on the engine.


Instrument cluster
Fig. 7 Instrument cluster: reset button

The trip odometer and odometer are displayed in the status bar (4).

The trip odometer shows the distance driven since it was last reset. It can be used to measure short distances. The odometer shows the total distance that the vehicle has been driven.

Resetting the trip odometer


Distances are displayed in mi (miles) or km (kilometers).

Outside temperature display

The outside temperature is displayed in the status bar (4).

If your vehicle is stationary or if you are driving at very low speeds, the temperature displayed in the instrument cluster may be slightly higher than the actual temperature outside due to heat radiating from the motor.

At temperatures below 41 ºF (+5 ºC), a snowflake symbol appears in front of the temperature display.


Do not assume the roads are free of ice based on the outside temperature display. Be aware that there may be ice on roads even when the outside temperature is around 41 ºF (+5 ºC) and that ice can increase the risk of accidents.

Engine oil temperature indicator

Applies to: vehicles with engine oil temperature indicator

Depending on the vehicle equipment, the engine oil temperature may be indicated by a bar in the instrument cluster.

When engine oil temperatures are low, the display --- ºF (--- ºC) appears in the instrument cluster.

The engine has reached its operating temperature when the engine oil temperature is between 176 ºF (80 ºC) and 248 ºF (120 ºC) under normal driving conditions. The engine oil temperature may be higher if there is heavy engine load and high temperatures outside. This is not a cause for concern as long as the or indicator lights do not turn on.

Boost indicator

Applies to: vehicles with boost indicator

Depending on vehicle equipment, the current engine load (meaning the current boost pressure) may be indicated by a bar in the instrument cluster.

Vehicle functions


The trip computer is displayed in the first tab of the driver information system. Additional vehicle functions can be accessed depending on the vehicle equipment.

On-board computer

Changing the display

Resetting values to zero

Requirement: the Consumption, Short-term memory, or Long-term memory display must be selected.

Displays in the trip computer

The following displays may be shown, depending on the vehicle equipment:

Short-term memory and long-term memory

The short-term memory collects driving information from the time the ignition is switched on until it is switched off. If you continue driving within two hours after switching the ignition off, the new values will be included when calculating the current trip information.

Unlike the short-term memory, the long-term memory is not erased automatically. You can select the time period for evaluating trip information yourself.

Average consumption

The current consumption can be shown using a bar graph. The average consumption stored in the short-term memory is also displayed. If the bar is green, your vehicle is saving fuel (for example, using recuperation).

Energy consumers

The Energy consumers view lists other equipment that is currently affecting fuel consumption.

The display shows up to three equipment items. The equipment using the most power is listed first. If more than three items using power are switched on, the equipment that is currently using the most power is displayed. A gauge also shows the current total consumption of all other equipment.


The date, time of day, and time and date format can be set.

Coolant temperature display
Applies to: vehicles with a coolant temperature indicator The coolant temperature display (9) only functions when the ignition is switched on. To reduce the risk of engine damage, please observe the ...

Touch display

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