The 1929 Bentley 4.5 Litre Blower and 2014 Bentley Mulsanne Speed share a manufacturer in Bentley, but that's where the similarities get interesting. These two models reveal the versatility and ambition of the Bentley brand. The 2014 Bentley Mulsanne Speed holds a clear advantage in raw power with 530 hp compared to 240 hp, a 290-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Bentley 4.5 Litre uses a Inline-4 Supercharged displacing 4,398 cc, while the Bentley Mulsanne relies on a V8 Twin-Turbocharged with 6,752 cc. The 2014 Bentley Mulsanne Speed claims a higher top speed at 190 mph compared to 125 mph. The Bentley 4.5 Litre carries a weight advantage, tipping the scales 2337 lbs lighter. Rarity plays a significant role here — with only 55 units built, the 1929 Bentley 4.5 Litre Blower is considerably scarcer than the Bentley Mulsanne's 7,300 examples. On the collector market, the 1929 Bentley 4.5 Litre Blower commands a significant premium over the 2014 Bentley Mulsanne Speed, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1929 Bentley 4.5 Litre Blower rates higher among enthusiasts and auction houses.