The Hagerty Price Guide Has Been Updated, and “Soft” Is the Word of the Day

Most of our collector car indexes are down year-over-year, and some vehicles shed as much as 18 percent of their value.

The Hagerty Price Guide, which tracks the value of collector cars, saw a decline in most of its indexes year-over-year. Many vehicles lost a significant portion of their value, with some dropping as much as 18 percent. While we've previously covered the cars that experienced the steepest percentage drops, here are some of the high-dollar classics that saw the greatest declines in pure dollar terms.

As a reminder, if you're curious about how these changes were determined, you can find more information on the methodology behind the Hagerty Price Guide here.

1965-70 Aston Martin DB6 Vantage Coupe

Condition #2 decrease: -$58,900 (-11 percent)

The DB6, which closely resembles the DB5 that preceded it, featured a four-inch increase in wheelbase and a slightly higher roofline, resulting in a more spacious Aston. The side profile also underwent a transformation with the DB6's Kammback tail and an upward flourish at the very rear. Mechanically, the DB6 remained largely unchanged, boasting Tadek Marek's 4.0-liter six mated to either a ZF five-speed manual or a Borg-Warner three-speed auto. In its base form, the triple SU-carbureted DB6 had an output of 282 horsepower, while the coveted DB6 to own was the Vantage version, where the triple Weber-fed engine generated 325 hp. British magazine Motor described the DB6 Vantage as "a very Grand Tourer" that "makes the overall speed limit of 70 mph look ridiculous."

In the DB6 value hierarchy, the ultra-rare Vantage convertibles and base model convertibles command the highest prices, each valued at over $1M in excellent condition. Coupes, even Vantages, are worth less than half as much, and while all DB6s became more affordable this past quarter, Vantage coupes experienced the steepest decline. Weak sales, including a high volume of mediocre-condition cars hitting the auction market over the past few years, have contributed to the softening of DB6 prices.

1973-75 BMW 3.0CSL Batmobile

Condition #2 decrease: -$86,700 (-18 percent)

The 3.0 CSL, which debuted in 1972, was an enhancement of BMW's already solid E9 platform, boasting reduced weight and increased power, with nearly 1300 units built to homologate it for European Touring Car Championship racing. A lighter body, less trim, and Perspex side windows contributed to the weight reduction. In 1973, the displacement was bumped up to 3.2 liters, and an aero package was added, featuring a massive air dam, an even larger rear wing, a small roof spoiler, and fins along the front fenders. Despite BMW not officially naming this version the "Batmobile," the nickname has become synonymous with the car.

BMW also didn't sell this car in the U.S., but American Bimmer-heads have lusted after it for long enough that a decent number of them have made it to this side of the Atlantic. And, as classic BMW prices in general have appreciated significantly during the 2010s and 2020s, so has the Batmobile. From 2013-23, the condition #2 value of this car essentially tripled. Last year, however, was the peak, and sale prices have been soft. Since then, #2 values have sunk by 27 percent.

1955-57 Mercedes-Benz 300Sc Cabriolet

Condition #2 decrease: -$87,000 (-11 percent)

The 300Sc, part of the W188 generation of Mercedes-Benz, is quite rare with 98 coupes, 49 Cabriolet As, and 53 roadsters built. They are magnificent hand-built cars that retain some of that prewar coach-built streamlined elegance, but combine it with advanced postwar features like independent suspension and a fuel-injected engine similar to the one found in Mercedes' 300SL sports car. In fact, a 300Sc actually cost more than a 300SL when both cars were new.

Not so now. In fact, 300Sc prices have been consistently dropping for nearly a decade, and two recent sales for the rare cabriolet models don't show that trend reversing. A solid example sold this summer for $582,500, which is below its condition #4 ("fair") value, and another brought in even less at £368,000 ($477,885).

1963-64 Alfa Romeo TZ-1

Condition #2 decrease: -$150,