Some four-cylinder engines use eight spark plugs for better fuel economy, efficiency, and emissions, though they can be ...
Photo: Alfa Romeo Automobiles S.p.A. Back in the fifties when most Italian manufacturers were busy developing large engines, Alfa Romeo went the opposite route and created the Twin Spark inline-four.
Photo: Kevin Van Campenhout/Stellantis N.V. Throughout its illustrious history, Alfa Romeo developed several memorable concepts. Some inspired future production models, while others were just pure ...
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