ausfahren
to extend
To move a movable part from its resting position into an extended or stretched-out position.
Kurz vor der Landung fährt der Pilot das Fahrwerk aus.
Shortly before landing, the pilot extends the landing gear.

to extend / drive out / deliver
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to extend
To move a movable part from its resting position into an extended or stretched-out position.
Kurz vor der Landung fährt der Pilot das Fahrwerk aus.
Shortly before landing, the pilot extends the landing gear.

'Ausfahren' (to extend / drive out / deliver) is a separable verb. The prefix 'aus' goes at the end in a main clause. In the infinitive with 'zu', 'zu' is placed between the prefix and the verb.
Der LKW fährt die Rampe langsam aus.
The truck slowly extends the ramp.
The verb combines 'aus' (out) and 'fahren' (to drive/move). This basic idea of 'moving out' appears in almost all meanings, whether with technical parts, vehicles, or deliveries.
Bitte fahren Sie langsam aus der Tiefgarage aus.
Please drive slowly out of the underground garage.
The perfect tense is formed with 'sein' (to be) when it involves a change of location, for example taking a drive or driving out of a parking space. It is formed with 'haben' (to have) when an action is performed on an object, for example extending a technical part or delivering goods.
Wir sind am Wochenende mit dem Motorrad ausgefahren.
We went for a drive on the motorcycle at the weekend.
In this technical meaning, the objects are often mechanical or movable parts. Typical phrases are: 'eine Antenne ausfahren' (to extend an antenna), 'eine Markise ausfahren' (to extend an awning), 'eine Leiter ausfahren' (to extend a ladder), or 'ein Teleskop ausfahren' (to extend a telescope).
Der Feuerwehrmann fuhr die lange Leiter des Wagens aus.
The firefighter extended the vehicle's long ladder.
When you leave a place with a vehicle, the preposition 'aus' is used with the dative. Typical formulations are 'aus der Garage ausfahren' (to drive out of the garage) or 'aus der Einfahrt ausfahren' (to drive out of the driveway).
Schau nach links und rechts, bevor du aus der Einfahrt ausfährst.
Look left and right before you drive out of the driveway.
The expression 'die Krallen ausfahren' (to show one's claws) is a fixed idiom. It is used metaphorically and means that a person suddenly becomes aggressive, defensive, or quarrelsome.
Zuerst war sie ganz ruhig, aber bei der Kritik fuhr sie sofort die Krallen aus.
At first she was completely calm, but when criticized, she immediately showed her claws.
to deliver / provide
'liefern' and 'ausfahren' can both mean that goods or orders are brought to customers. 'liefern' is more general and emphasizes that something arrives at the recipient. It fits with packages, furniture, food, or other ordered items. 'ausfahren' emphasizes the drive and distribution to several places, for example with mail, newspapers, or food. Learners may confuse the words because both occur in delivery services. In practical terms: the business delivers the pizza; the driver delivers the orders along a route.

Am Montag fährt Mehmet die Bestellungen in der ganzen Innenstadt aus.
On Monday, Mehmet delivers the orders throughout the entire city center.
Der Supermarkt liefert die schweren Getränke direkt bis zur Wohnungstür.
The supermarket delivers the heavy drinks straight to the apartment door.