Alfa Romeo Giulia is the name of three not directly related model (line)s from Italian carmaker Alfa Romeo. The first were the four-door Type 105 entry-level compact executive sports sedans produced from 1962 to 1978; the second are the updated (mainly up-engined) Spider, Sprint, and Sprint Speciale Alfa Giuliettas, and in 2015, Alfa Romeo revived the Giulia name, again for a compact executive car (type 952).
Alfa Romeo was one of the first mainstream manufacturers to put a powerful engine in a light-weight 1 tonne (2,205 lb) four-door car for mass production. The Type 105 Giulia was equipped with a light alloy twin overhead camshaft four-cylinder engine similar to that of the earlier Giulietta (750/101) range, available in 1.3-litre (1,290 cc) and 1.6-litre (1,570 cc) versions. Various configurations of carburetors and tuning produced power outputs from about 80 to about 110 bhp (55 to 75 kW), coupled in most cases to 5-speed manual transmission.
Giulia sedans were noted for lively handling and impressive acceleration among small European four-door sedans of their era, especially considering modest engine sizes offered. The popular Super version with the twin carburettor 1.6 litre engine had a top speed of 170 km/h (106 mph) and accelerated from 0 to 100 km/h (62 mph) in about 12 seconds, better than many sports cars of the late 1960s and early 1970s. When leaving the factory all variations of the Giulia originally fitted either Pirelli Cinturato 165HR14 or 155HR15 tyres (CA67).
The styling of the three-box four-door sedan was somewhat wanting, with its three main volumes all truly square and boxy, softened only by detailing of the front and bonnet, roofline, and boot. Using a wind tunnel during development helped designers to find a remarkably aerodynamic shape with a drag coefficient of Cd=0.34, particularly low for a saloon of the era.
The Giulia Spider was succeeded by the Alfa Romeo Spider (105/115) in 1966.
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