Germany vs USA — 2007 vs 2006
| B3 Biturbo Coupe | XLR-V Supercharged Northstar | |
|---|---|---|
| Horsepower | 360 hp | 443 hp |
| Torque | 369 lb-ft | 414 lb-ft |
| Engine Size | 2,979 cc | 4,371 cc |
| 0-60 mph | 4.7 sec | 4.6 sec |
| Top Speed | 183 mph | 155 mph |
| ¼ Mile | 12.9 sec | 13.0 sec |
| Weight | 3,461 lbs | 4,022 lbs |
| Wheelbase | 2,760 mm | 2,685 mm |
| Length | 4,580 mm | 4,515 mm |
| Units Produced | 800 | 2,485 |
| Original MSRP | $72,000 | $98,290 |
| Value (Excellent) | $75,000 | $55,000 |
| Collectibility | 7/10 | 6/10 |
| Rarity | 8/10 | 8/10 |
The 2007 Alpina B3 Biturbo Coupe holds an edge across most measurable criteria, offering higher top speed, lighter weight, greater rarity. That said, the 2006 Cadillac XLR-V Supercharged Northstar brings more power, quicker acceleration and remains a compelling choice for enthusiasts who value Cadillac heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
Putting the 2007 Alpina B3 Biturbo Coupe against the 2006 Cadillac XLR-V Supercharged Northstar is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — Germany versus USA. The 2006 Cadillac XLR-V Supercharged Northstar holds a clear advantage in raw power with 443 hp compared to 360 hp, a 83-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Alpina B3 uses a Inline-6 Twin-Turbocharged displacing 2,979 cc, while the Cadillac XLR-V relies on a V8 DOHC Supercharged (Northstar LC3) with 4,371 cc. In the sprint to 60 mph, the 2006 Cadillac XLR-V Supercharged Northstar edges ahead at 4.6 seconds versus 4.7 seconds. The Alpina B3 carries a weight advantage, tipping the scales 561 lbs lighter. Whether you prioritize driving dynamics, heritage, or aesthetic appeal, both contenders make a strong case for themselves.