well you could all stop being so pedantic and did what I put - X pot, or X cyl. I was going to say the same thing, but I knew what the guy meant so I decided to try and answer the question instead 👍
Good for you! You're in the wrong place if you don't like a bit of light-hearted pedantary.
Anyhoo... cars only. I'm skipping some of the larger inline engines and a few others as I don't know enough about the cars they were powered by. And no race cars either.
Single - Volkswagen 1l concept (1-cyl diesel)
Inline Twin - Fiat 500 (the original, obviously)
V-twin - 1930s Morgan Supersports
Flat twin - Citroen 2CV
Inline triple - Honda Beat (or VAG's 3-cyl 1.4 turbodiesel)
Inline 4 - Honda B16B used in the EK9 Civic Type R (closely followed by any Alfa Romeo twin-spark inline 4)
Flat 4 - Any old Volkswagen air-cooled engine
V4 - The narrow-angle V4 used in the Lancia Fulvia
Inline 5 - Alfa Romeo's 2.4 turbodiesel (tough competition here though as I love the sound of all inline 5s)
V5 - Volkswagen's V5 used previously in the Golf, Passat and Bora
Inline 6 - The amazing engine in BMW's E46 M3 CSL
Flat 6 - Any Porsche flat 6, either air-cooled or water cooled
V6 - Alfa Romeo's 3.2 V6 used in the 147 and 156 GTA models (though Ferrari's V6 used in the Dino and the Lancia Stratos runs it very close)
VR6 - Corrado VR6. (Volkswagen have the market cornered here. Technically counts as a different engine to the V6 as it uses a common cylinder head as the angle of the V is so narrow.)
V8 - Ferrari's flat-plane crank V8 used in their smaller sports cars. Spine tingling.
W8 - VW Passat W8
V10 - The gorgeous sound of the Porsche Carrera GT
Flat 12 - Ferrari 512 BB
V12 - Ferrari Enzo
W12 - Spyker C12 LaTurbie (VAG W12 engine)
W16 - Bugatti Veyron
Wankel rotary - Mazda RX-7
The list would look very different with motorcycles in there, at least with regard to single, twin, triple and 5 cylinder engines. And V4s, to tell the truth. My favourite inline fours are still in cars.
