1988-1991 Porsche 944 Turbo / Turbo S
Average Value in May 2010: $6,000
Average Value in May 2015: $11,500
1991-1996 Nissan 300ZX Turbo
Average Value in May 2011: $6,800
Average Value in May 2015: $7,900
The Datsun 240Z is arguably one of the coolest vintage Japanese sports cars that money can buy today. Fast forward a decade or two and its ‘90s 300ZX cousin could follow suit. Even the nicest examples retain relatively low values at the $18,000 mark. All the better for you to buy low and sell high.
1997-2001 Acura NSX
Average Value in May 2010: $29,100
Average Value in May 2015: $38,900
A hero of the ‘90s, the Honda/Acura NSX was about as speedy as it was innovative, which is to say “very.” Over the past years its values have begun to creep ever skyward, and the best kept of the bunch can claim their worth of over $60,000. Effectively, it was the Ferrari F40 or Lamborghini Countach of a younger generation.
1990-1998 Lamborghini Diablo
Average Value in May 2010: $71,000
Average Value in May 2015: $80,000
There seems to be a cooling off point for Lamborghini sportscars of yesteryear. But in time, the values come back…and come back with a vengeance, as noted by current values for the Countachs. Fine Diablo examples are valued at around $110,000 to $120,000 these days. That could surely go north in a hurry.
1983-1989 BMW M6
Average Value in May 2010: $18,000
Average Value in May 2015: $23,700
In a way, the original BMW M6 was overshadowed by its M3 and M5 brethren. But now the big straight-six battle cruiser is getting on with mainstream collectors and its stock is ever rising. A perfect M6 would have been valued at around $33,000 in 2010. Today, it’s closer to $49,000 and looking to climb further.
All sports car values expressed are reflective of vehicles fitting the “Vehicle Condition 3” category, which Hagerty Insurance gives to cars deemed in “good” condition and without visual flaws.