Porsche Panamera vs BMW Alpina B5

What's the difference?

Australia hasn't had what you'd call a love affair with the Porsche Panamera. Especially compared to the on-going romance with its iconic sibling, the 911 and even its SUV stablemates. 

The Panamera straddles the fence between high-performance sports car and family sedan and it's a position rivals like the BMW 740i, Maserati Quattroporte and Mercedes-Benz S450 have sometimes found difficult to balance.

This new-generation 'base' Panamera model is on test to see if this sedan's 2025 redesign will launch an arrow from Cupid's bow for Australian families?

The BMW Alpina B5 Bi-Turbo is not actually a BMW. Not according to the German Federal Motor Transport Authority, at least.

Nope, the modifications applied by tuning house Alpina to the 5 Series are deemed so significant that if you open the bonnet and look inside the engine bay, you'll see that the BMW VIN has been struck through twice and an Alpina vehicle number stamped underneath it. 

The B5 is not the first model to be recognised in this way, either; the German government has recognised Alpina as a seperate car manufacturer since 1983.

The B5 has other ‘B' siblings, too. There's the B3 S Bi-Turbo, which is based on the BMW 3 Series, the B4 S Bi-Turbo (the BMW 4 Series) and the B7 Bi-Turbo (I don't need to tell you what this is based on, right?) which I've reviewed, too.

So just what has Alpina done to this unsuspecting BMW 5 Series? Is it really worth the extra money? How does the B5 compare to an M5? Could it actually be superior? And did they really take the speed limiter off to let it warp-speed to beyond 300km/h?