In the age of electrification, the phrase “they don’t make ’em like they used to” couldn’t be more appropriate. As such, certain ICE-based collector vehicles are rising in value. Among these are the ninth-generation Cadillac Eldorado, the value of which, on average, has increased significantly in the last three months.

According to the Hagerty Price Guide, the average value of a 1971 through 1978 Cadillac Eldorado has increased by 16 percent in the last quarter, one of the largest percentage value increases recorded for Q2 of the 2024 calendar year. A few other notable models include the 1966 through 1972 Lamborghini Miura (up 22 percent), 1989 through 1993 Dodge diesel pickup trucks (up 19 percent), the 1980 through 1993 Ferrari Mondial (up 17 percent), and 1949 through 1971 Military Jeeps (up 12 percent).

“Nothing says peak 1970s personal luxury like an Eldorado,” Hagerty writes. “They’re big, they’re plush, and they have that massive 500-cubic-inch V8, which completely ignored the crunch of rising gas prices of the era.”

As Hagerty points out, more than a few buyers saw the writing on the wall and scooped up new examples of the Eldorado with the intention of reselling the vehicles later. This led to a fall in prices, at least initially, as an abundance of well-preserved examples hit the market. Now, however, it appears as though prices are on the rise once again. The increase in value for the Eldo coincides with a general rise for ’70s-era American collectible cars, and Hagerty expects those gains to continue on into the future.

For reference, the Hagerty Price Guide is based on an analysis of various data and criteria, including auction results, peer-to-peer sales, vehicle asking prices, and dealer and broker sales, all of which are considered when gauging vehicle value. These decisions are then peer-reviewed by professional analysts, accredited appraisers, and Concours judges and then either reconsidered or approved.