The index represents a measure of the car panel evolution. Its base value of 1,000 wat set at the creation of the panel and evolves according to the evolution of the prices of the vehicles that make up its panel.
Alfa Romeo Alfetta GTV6 (1980 - 1987) ↑ 
Alfa Romeo Alfa 164 v6 (1988 - 1997) ↑ 
Alfa Romeo 155 v6 (1992 - 1997) ![photo Alfa Romeo GTV V6 [916]](http://www.classictrends.eu/img/auto/1500.jpg)
Alfa Romeo GTV V6 [916] (1995 - 2006) = ![photo Alfa Romeo Spider V6 [916]](http://www.classictrends.eu/img/auto/1501.jpg)
Alfa Romeo Spider V6 [916] (1995 - 2006) ↑ 
Alfa Romeo 156 V6 2,5l (1997 - 2005) ↑ 
Alfa Romeo 156 GTA (1997 - 2005) ↑ 
Alfa Romeo 166 v6 (1998 - 2007) ↑ 
Alfa Romeo 147 GTA (2000 - 2010) = 
Alfa Romeo GT V6 (2003 - 2010) ↑ 