SAN FRANCISCO (AP) — Volkswagen is facing a deadline to tell a federal judge in San Francisco whether it has reached a deal with U.S. regulators and attorneys for car owners on the remaining 80,000 diesel vehicles that cheated on emissions tests.

U.S. District Judge Charles Breyer gave the sides until Monday to update him on a potential settlement. He postponed a hearing twice Friday to give the parties more time to negotiate.

Breyer said the parties had made substantial progress and he was optimistic they would arrive at a resolution.

The talks aim to hammer out what to do about 80,000 3-liter diesel cars that were programmed to skirt emissions tests.

The German automaker previously reached a deal for 475,000 polluting 2-liter diesel vehicles caught up in the scandal.

[STORY BY: THE ASSOCIATED PRESS]

More From WIBX 950