Inline-six engines are known for their size and smoothness, often powering larger, more premium vehicles. However, throughout automotive history, several production cars have featured surprisingly small straight-six engines. These models prove that the iconic six-cylinder layout was not always about big displacement but also about refinement, balance, and clever engineering. Let’s look at the smallest inline-six engines ever designed for cars!
Alfa Romeo 6C 1500 (1927-1930)
The Alfa Romeo 6C 1500 was lightweight and had a 1,487 cc inline-six engine with a single overhead camshaft. It was equipped with a 4-speed manual transmission and generated 44–54 horsepower. It provided remarkable performance and refinement for its time, with a top speed close to 75 mph and rear-wheel drive. The car's large hood and graceful, flowing bodywork were reminiscent of traditional Italian pre-war design, highlighting both performance and handcrafted luxury appeal.
Mercedes-Benz 8/38 200 (1933-1934)
The Mercedes-Benz 8/38 200 featured a 1,988 cc inline-six engine that produced roughly 38 horsepower. It had a carbureted engine, rear-wheel drive, and a four-speed manual transmission. It was known for its durability and smoothness, and it could achieve speeds of up to 65 mph, providing a comfortable, polished driving experience for pre-war luxury buyers. Its design adhered to traditional luxury appearance, with upright proportions, a lofty grille, and a wide cabin, providing comfort, prestige, and durability in the early automotive period.
BMW 303 (1933-1937)
The BMW 303 had an inline-six engine with a displacement of 1,173 cc and produced about 30 horsepower. It had a simple carburetor system, rear-wheel drive, and a four-speed manual transmission. Despite its diminutive size, it could attain speeds of around 56 mph, making it both efficient and historically noteworthy as BMW's first six-cylinder production vehicle. Its design featured BMW's trademark kidney grille for the first time, along with a small body that balanced practicality with a strong, unmistakable front-end identity.
Ford Falcon (1960-1970)
The Ford Falcon had an inline-six engine with a 2,350 cc capacity. It was bigger than similar vehicles in Europe, but Americans thought it was small and was known for being tough and easy to use. It had a clean, simple design with a boxy shape that was modern for the time. It was made to be practical, affordable, and easy to use for American families.
Triumph Vitesse 6 (1962-1971)
The Triumph Vitesse 6 featured a 1,596-cc inline-six engine with overhead valves and twin carburetors. It produced between 70 and 104 horsepower, depending on the version. It could reach over 100 mph when equipped with a 4-speed manual transmission and rear-wheel drive, delivering powerful performance in a compact, lightweight package. Its style was tiny and elegant, with clean lines and delicate chrome elements, giving it a polished yet sporty look that was typical of British cars at the time.
Toyota 2000 GT (1967-1970)
The Toyota 2000GT had a 1,988 cc inline-six engine with two overhead camshafts, built to go fast. A 5-speed manual gearbox went with the engine, which made about 148 horsepower. With rear-wheel drive and a top speed of about 135 mph, it performed well and became famous worldwide. It was inspired by European sports cars and had a low profile, a long hood, and smooth, flowing lines that made it famous.
Nissan 200 ZR-II (Late 1970s-Early 1980s)
The Nissan 200 ZR-II featured a 1,998 cc inline-six engine with electronic fuel injection in later versions. It produced 130–145 horsepower and was paired with a 5-speed manual transmission. The design reflected the sporty Japanese styling of the era, with sharp lines, a low stance, and aerodynamic elements that enhanced both performance and visual appeal.
BMW 320/6 (1977-1982)
The BMW 320/6 had a 1,991 cc inline-six engine that made about 122 horsepower. It had a five-speed manual transmission, fuel injection, and rear-wheel drive. With a top speed of about 112 mph, it performed and refined very well, which solidified BMW's reputation for smooth, responsive six-cylinder engines. Its design followed BMW's idea of clean, driver-focused cars. The car had a balanced shape, minimal overhangs, and a sporty yet understated look that was typical of the brand.
Lexus IS200 (1999-2005)
The Lexus IS200 had a 1,988 cc inline six engine with dual overhead camshafts and variable valve timing. It produced around 153 horsepower and was equipped with a 6-speed manual or automatic transmission. With rear-wheel drive and a top speed of around 134 mph, it provided a sophisticated yet sporty driving experience. Its design blended sharp lines with a modern luxury look, complete with a well-crafted interior and a sporting stance geared at younger premium buyers.
