A rare "Sport" model was produced in 1985 to homologate for the sub 1,300 cc class of Group A for the British Rally Championship. These sport models were white and came with unique vinyl decals, a 13SB engine with twin Weber 40 DCOE carburettors, an optional bespoke camshaft, a replacement rear silencer, and few luxuries. This gave 93 hp and a top speed of 112 mph (180 km/h) with a 0–60 mph time of 8.9 seconds. These are by far the rarest models (500 produced) and thus acquire a high market price if one does become available.
The Opel Karl is powered by a new 1.0-liter turbocharged Ecotec three-cylinder making 74 hp, a bit less than the outgoing Chevrolet Spark’s 84 hp from a 1.2-liter four-cylinder. The three-cylinder engine is part of GM’s new global, small-displacement Ecotec engine family, so it’s possible that Chevrolet may offer a slightly larger turbocharged engine for the Spark in the U.S. The European-market Opel is also available only with a five-speed manual, while the Spark will almost surely be offered with an automatic transmission option.
Opel campaigned the car extensively in motorsport too. The rally version was uncompetitive, but Opel eagerly waded into the 160mph traffic jam that was the International Touring Car Championship. The ITCC was created from the German DTM series, in which Opel had struggled. A rule change allowed Opel to use a new 480bhp V6 derived from the road car. The resultant four-wheel-drive monster carried Manuel Reuter to the 1996 ITCC driver's crown and Opel won the manufacturers' gong, beating Alfa Romeo and Mercedes-Benz. It was the Calibra's finest hour.
As such, the car’s 2.5L C25XE V6 was turned around 90 degrees to assume a longitudinal position. Keeping only the most essential bits, British engineering firm Cosworth turned the 170 horsepower engine into a large bore, short stroke masterpiece. Using design principles akin to those used in Formula One, the unit belted out 420 horsepower at 11,650 rpm.
While the Ipanema clearly succeeded the Marajó, production of the Chevette (by now in sedan form only, the hatchback having been discontinued after the 1987 model year) and of the Kadett noticeably overlapped; the newer model was placed above the old one in Chevrolet's lineup. While Chevrolet entertained the possibility of a pick-up version of the Kadett E, it never materialized.