4 speed automatic with electronic overdrive?

[TCHUN003]

What exaclty is this?

[dahonam]

What exaclty is this?

Its your started automatic transmission that has the little extra "O/D" button on it...

From wiki

Generally speaking, overdrive (OD) is the highest gear in the transmission. Most automatic transmissions have three speeds and overdrive (fourth speed). Overdrive allows the engine to operate at a lower rpm for a given road speed. This allows the vehicle to realize better fuel efficiency, and often quieter operation on the highway. When it is switched on, the transmission can shift into overdrive mode after a certain speed is reached (usually 70+ km/h [45+ mph] depending on the load). When it is off, the transmission shifting is limited to the lower gears. For normal driving conditions, operation of the overdrive should be enabled only if the average speed is above 70 km/h (approx. 43 MPH).

It may be necessary to switch it off if the vehicle is being operated in a mountainous area.

The automatic transmission automatically shifts from OD to third gear when more load is present. When less load is present, it shifts back to OD. Under certain conditions, for example driving uphill or towing a trailer, the transmission may "hunt" between OD and the third gear, shifting back and forth. In this case, switching it off can help the transmission to 'decide'. It may also be advantageous to switch it off if engine braking is desired, for example when driving downhill. The vehicle's owner's manual will often contain information and suitable procedures regarding such situations, for each given vehicle.

[AudiA4Turbo22]

Audi's came with 4 speeds???

[TCHUN003]

Audi's came with 4 speeds???

That's what it stated in the ad for an automatic 2005 USP avant that I was looking at.

[AudiA4Turbo22]

^^ they're making a mistake, they are all 5's! and the CVT is like unlimited gearing LOL!