Maserati Quattroporte vs BMW Alpina B5

What's the difference?

Maserati's Quattroporte is part of a dying breed. A decade or so ago, the European manufacturers took a huge amount of pride in their range-topping big luxury sedans, cars you can either drive or be driven in, bristling with the latest technology.

In 2015, all we hear about are the range-topping SUVs from those makers, with cars like the S-Class and 7 Series fading slowly into irrelevance.

While by no means low-tech, the Maserati Quattroporte takes the high style route, focussing on a luxurious interior with that handmade feel.

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?