It's another acquisition for Lithia Motors & Driveway, this time in Iowa. 

The public retailer said Tuesday it has purchased Ramsey Subaru and Mazda, which it said are the highest-volume dealers for those respective brands in the state.

Lithia anticipates the purchase will add $100 million to its annual revenues. Lithia's network expansion so far this year is expected to add more than $3.5 billion in annualized revenues.

"We are delighted to add another high-performing store to serve our customers in the North Central Region," Lithia president and chief executive officer Bryan DeBoer said in a news release. "This acquisition improves our brand mix and ability to complete in-home and in-network solutions throughout their entire vehicle ownership lifecycle."

Lithia has been quite the active buyer in the second half of the year.

Since July, Lithia has now made 10 announcements of purchases. Beore the Ramsey acquisition, the most recent was the Sterling Motorcars group purchase earlier this month that gave the retailer a presence in the Mid-Atlantic.