SANTA MONICA, Calif. -

If the latest analysis from Edmunds is any indication, car dealers may be inclined to hold on to those trade-ins with 100,000 or more miles.

Cars with that level of mileage are selling at considerably higher prices and with quicker turn times than they were a year ago.

Vehicles with 100,000 to 109,999 miles fetched an average transaction price of $16,489 at dealerships last month, Edmunds said. Not only is that up 31% year-over-year, Edmunds has never before seen average transaction prices that high on that class of vehicle.

Not to mention, the average turn time on those vehicles was 30.5 days in June, down from 37.7 days a year ago, according to Edmunds.

“It’s been a long-held belief among many car buyers and sellers that a vehicle's value begins to decline dramatically once it crosses the 100,000-mile mark, but that's proven to be wrong as vehicle technology and durability have greatly improved over the years,” said Ivan Drury, Edmunds' senior manager of insights, in a news release.

“The soaring demand we're seeing in the used vehicle market right now only further debunks this myth: We're seeing 7- to 8-year-old vehicles with more than 100,000 miles commanding prices today that are more like the cost of 5-year-old vehicles with 60,000-80,000 miles a year ago,” Drury said.

The analysis goes on to dissect the top 10 vehicles within this 100,000-109,999- mile class from last month.

The model with the biggest jump in ATP was the Chevrolet Silverado 1500, whose prices rocketed 49% year-over-year to $26,914 in June. The Ford F-150 was next, as its ATP climbed 43% to $25,924, according to Edmunds.

And in third was another pickup: the Ram 1500, whose ATP rose 42%.

Among these old timers, the models with the steepest drops in turn times were the Jeep Wrangler (down 37% at 29.7 days), the Ram 1500 (down 28% at 27.4 days) and the Honda Civic (down 25% at 28.3 days).