The Evolution models
Back in the late 1970s, Mercedes competed in rallying with the big V8-powered Coupés of the R107 Series, mainly the light-weight Mercedes 450 SLC 5.0. The 190E 2.3-16 was originally designed to continue rallying, but the Audi Quattro with its all wheel drive and turbocharger made it apparent that the 2.3-16 would not be competitive.
Thus, this car was released as a high powered luxury version. At the inauguration of the new, shorter Nürburgring in 1984, a race with identical cars was held, with former and current F1 pilots at the wheel. A rather unknown young driver named Ayrton Senna took first place in that race, causing quite an upset.
Private Teams such as AMG later entered the 2.3-16 in touring cars races, especially the DTM. In the late 1980s, this car and its companion, the 2.5-16 (never released in the United States) scored several wins, against the similar BMW M3 and even the turbocharged Ford Sierra Cosworth
However, it became obvious the 2.5-16 needed a boost. And one had to come soon with the debut of the BMW M3 Evo, Mercedes direct competitor. In March 1989, the 190E 2.5-16 Evolution debuted. This car had a redesigned engine allowing for 210 hp (156 kW), compared with 195 hp (145 kW) for the stock 2.5-16 and approx 185 hp (137 kW) for the 2.3-16, with a shorter stroke but with larger pistons. This car also had a redesigned body kit, which included a new spoiler, wider fender flares, and an unmistakable Evolution badge in both quarter panels. This variant of the 190E was by far the best of its kind, and only 502 units produced for homologation in compliance with DTM rules.
While the Evolution I model did quite well, engineers knew that the 190E had more potential. In March 1990, at the Geneva Motor Show, The 190E 2.5-16 Evolution II was shown. With the success of the first Evolution model, this model's 502-unit production was already sold before it was unveiled. This car retailed in 1990 for US$80,000. First, power was upgraded to 235 hp (175 kW) by increasing the bore and stroke. Secondly, a radically designed body kit, with a very large wing, rear window spoiler, and special Evolution II rims. That body kit served an aerodynamic purpose — it was wind tunnel tested to reduce drag to .29. One BMW executive was quoted saying “if that rear wing works, we have to redesign our windtunnel.”
Together with the BMW M3, which was much more successful overall worldwide, the 190E 2.5-16 continues to dominate the “unmodified cars up to 2500cc” class in endurance and 24 hour racing at the Nürburgring Nordschleife, as newer models from BMW, Honda and especially Mercedes are heavier and not designed to be as competitive as these two 1980s veterans.
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