Siata 208S

vs

AC Ace

Italy vs United Kingdom — 1953 vs 1956

Siata 208S (1953)
AC Ace (1956)
Specifications
208S SpiderAce Bristol
Horsepower120 hp125 hp
Torque120 lb-ft124 lb-ft
Engine Size1,996 cc1,971 cc
0-60 mph9.5 sec9.0 sec
Top Speed112 mph120 mph
¼ Mile16.5 sec
Weight1,598 lbs1,880 lbs
Wheelbase2,400 mm2,286 mm
Length3,962 mm3,835 mm
Units Produced35466
Original MSRP$4,500
Value (Excellent)$350,000$500,000
Collectibility9/109/10
Rarity9/109/10
The Verdict

Two outstanding machines, each with compelling strengths. The 1953 Siata 208S Spider excels in lighter weight, greater rarity, while the 1956 AC Ace Bristol stands out for quicker acceleration, higher top speed. The best advice? Drive both if you can, then follow your instincts.

Overview

Putting the 1953 Siata 208S Spider against the 1956 AC Ace Bristol is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — Italy versus United Kingdom. On paper, the two are remarkably close in power output, with the 1953 Siata 208S Spider producing 120 hp and the 1956 AC Ace Bristol delivering 125 hp. Under the hood, the contrast is notable: the Siata 208S uses a V8 OHV displacing 1,996 cc, while the AC Ace relies on a Inline-6 OHV (Bristol BS1 Mk II) with 1,971 cc. In the sprint to 60 mph, the 1956 AC Ace Bristol edges ahead at 9.0 seconds versus 9.5 seconds. The Siata 208S carries a weight advantage, tipping the scales 282 lbs lighter. Rarity plays a significant role here — with only 35 units built, the 1953 Siata 208S Spider is considerably scarcer than the AC Ace's 466 examples. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.