Now that BMW has announced its intent to market the next 1-Series with a three-cylinder engine the skeptics may start to believe. North America has always been the land of bigger is better and the more cylinders it has the more we love it, so cars with just three cylinders have always bordered on being a joke. But engine technology has raced at full speed in the last few years to develop six-cylinder mills that produce the power of an eight and four-cylinder engines that perform like a six... and soon you'll be driving turbocharged three-cylinder cars that combine sporting performance with remarkable fuel economy.
BMW is just the latest manufacturer to join the three-cylinder club. Ford is offering their new 1.0 Ecoboost unit in the European Focus from 2012. This new engine features several innovations, including the use of an unbalanced flywheel to remove the need to use balancer shafts. The Volkswagen Group is featuring three-cylinder engines in the Audi A2, VW up!, and versions of the Polo, Seat Ibiza, and Skoda Fabia. Peugeot and Citroën are using a common inline-three-cylinder engine. But here in the land of bigness the only car currently available with a three-cylinder is the Smart.
The three-cylinder engine has a lengthy history that includes such once-successful makes as Saab and DKW. Indeed the first Saabs sold in the US and Canada featured a three-cylinder two-stroke engine. By 1966 the Saab 96 (above) came with 46 bhp, an unimpressive number until you remember that Saabs were lightweights with slippery aerodynamics. With the additional advantage of front-wheel-drive Saabs were quick enough to win the Monte Carlo Rallye, a mark of superiority in those years.
Germany's DKW, one of the historic Auto-Union marques, also featured two-stroke three-cylinder engines. The largest of these was just under 1.2 litres capacity but it had an output of 60 bhp. Among its last and much desired cars was the 1000 SP Roadster and Coupe, which owed much of their styling influences to the Ford Thunderbird.
More recently, GM marketed the Chevy Sprint/Geo Metro/Pontiac Firefly, three-cylinder badge-engineered versions of the four-cylinder Suzuki Swift, intended to provide Chevrolet and Pontiac dealers with a low-cost alternative to Japanese competitors. GM's advertising generally ignored the number of cylinders, while emphasising fuel economy. With the standard 5-speed transmission, performance was adequate for city and most highway driving but the optional automatic came only with three-speeds, quite a stretch for an engine of that size.
Back in the 90s I happened to be in Phoenix, directing a sales video that I'd written for GM Canada. At the conclusion of the shoot I decided to rent a car and spend a couple of days further north, in the Sonoma area. Always a small car enthusiast, I was quite willing to take the least expensive vehicle offered by the rental car company, which turned out to be a Metro 4-door sedan with the three-cylinder Suzuki-designed engine and GM's 3-speed auto. I expected it to perform like a slug but in fact it handled the mountain ascents with ease and thanks to nimble handling could leave other vehicles in its tiny wake. Okay, with a full complement of passengers and a trunk full of luggage that would not have been the case but as a single traveler I was impressed.
In this fast-changing auto world three-cylinder engines will no longer be an oddity in the US and Canada, although older generations of drivers, brought up on multi-cylinders, will no doubt grumble and complain and make derogative remarks, as they once did when a car with "just" four cylinders made them eat toast on a winding road.
History probably records many more cars with three-cylinder engines than those mentioned above. If you know of any, feel welcome to add to our Marque1's visitor's knowledge by using the "Comments" box below