Alfa Romeo Giulia vs BMW Alpina B5

What's the difference?

Alfa Romeo. A brand with more re-boots than success stories. Yet one which driving enthusiasts the world over can’t seem to shake the allure of.

Of course, these are not cars for just everyone. Most mainstream buyers are scared away by what I like to call the three Rs. Rust. Reliability. Resale.

Alfa’s tumultuous (and often overstated) past is one it has trouble putting behind it. Reputations are hard earned and easily lost, and besides, the majority of the voting public aspire to own something German, which they see a lot more of on the road.

It doesn’t help that Alfa also dragged its feet on committing to a five-year warranty in Australia (in early 2022), hardly a statement of confidence in its product.

You’re probably wondering by now why anyone would buy one, and why it’s the car which most enthusiasts wish they were brave enough to own.

Well the Giulia is the Alfa Romeo. The low-slung, sporty, sexy car which a few of us out there still use as a reference-point for how to make a sedan in 2023 good-looking, and how to make one drive like it has heart.

The brand can throw all the SUVs at us it wants, but for those who see Alfa Romeo for the brand it should be, this car is it.

Parting sorrow, perhaps, the version we’re looking at for this review may be one of the last - under its new Stellantis management, Alfa has said it will leave this fantastic, promising Giorgio platform behind it in a move to be more electrified.

Travel with me, dear reader, as we celebrate a car which is the culmination of Alfa’s past, at a moment before it steps into the future.

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?