were also available (it was rare to see a 912E with the standard 15-inch steel wheels). Other options were electric sunroof, 923/02 anti-slip differential, electric antenna (located on the passenger side front fender), power door mirrors, power windows, headlight washers, H1 headlamps. Air conditioning was a popular dealer-installed option. As a stopgap, the 912E was the single instance of "planned obsolescence" in Porsche history. With only 2,092 built, its one year-only model run, and the desirable qualities inherited from contemporary 911s, the 912E is one of the more collectible four-cylinder Porsches. Based on 912 Registry member Aric Gless's research, over half of the 2,092 cars are still in use. The Prototyp Museum collection in Hamburg Germany includes a 912E pre-series vehicle constructed utilizing a 911 Chassis No. 911 520 1617 and four-cylinder VW-Porsche 90HP 2.0L Type 4 similar to the late-model 2.0L 914/4. Road & Track said, “The 912E will obviously find favor with those who prefer a slightly more practical and tractable Porsche. It’s a car with almost all the sporting virtues of the more expensive 911S, yet its simpler pushrod 4-cyl. engine should make for better fuel economy and less expensive maintenance than the 911’s six” "The fittings are simpler in this model although in terms of materials, trim and finishing the 912E is of high Porsche quality. "The 912E is comfortable where the Carrera is harsh, rational where the Carrera is excessive.” R&T's 11.3-second 0-60 mph time and 115-mph top speed looked good against the observed 23.0-mpg economy." Motorsport Sold to the public for street use, the Porsche 912 has also proven successful as a race car, from production years to current vintage events. In 1967 the 912 contributed to Porsche factory rally history when independent Polish driver Sobiesław Zasada drove a factory-loaned 912, bearing Polish plate 6177 KR, to capture the European Rally Championship for Group 1 series touring cars. In the 1967 Rally of Poland, the second oldest rally in the world and one of the oldest motorsport events in the world, Zasada drove his 912 race No. 47 to finish first overall out of a starting field of 50 entries. As a vintage rally car, on January 29, 2012, Hayden Burvill, Alastair Caldwell, and their #35 1968 Porsche 912 finished first in class, and 7th overall in the 2012 London to Cape Town World Cup Rally; a 14 country, three continent, 14,000 kilometre, 26