Currently reading: Alpina B4 spotted at the Nurburgring
Alpina's BMW 4-series rival, the B4, is spotted at BMW's Nurburgring test centre, while spy shots also show the new B6 Gran Coupé

The new Alpina B4 Biturbo has again been spotted at the Nurburgring.

This latest test model was seen parked outside BMW's test centre, which is based at the circuit. 

The Alpina B4 Biturbo — Alpina's answer to the BMW 4-series — is likely to share its mechanical package with the new B3 Biturbo, with power coming from a twin-turbo straight-six engine with 404bhp and 443lb ft.

The B4 is tipped to be launched at the Geneva motor show in March before reaching the UK next summer.

Meanwhile, the B6 Gran Coupe has also been spotted testing, having been revealed at the Frankfurt motor show. However, this 532bhp twin-turbo 4.4-litre V8-powered model is not destined for sale in the UK because it will be built in left-hand drive only. 

Autocar recently drove the new Alpina B6 Biturbo in regular coupé form, finding it to be a powerful and competent high-speed cruiser.


Read our review

Car review

Niche car maker goes large with its repurposed twin-turbo V8 6 Series that is at its most comfortable as a high speed tourer, rather than outright sports car

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3mocion 1 August 2013

I know it's called the 4 series

This is the best looking, best proportioned 3 series coupe ever! The surface treatment together with the rake of the rear windscreen and those rims makes it look sharp! Saying that, they could have designed the side vent to look cohesive with the rest of the design.

horses 1 August 2013

Before the B4, Alpina will

Before the B4, Alpina will reveal the B6 GranCoupé at the Frankfurt motor show in September

paul896 1 August 2013


Love it wheels on the B4 but are they too big? Is it just me or would they look better being 1" or 2" smaller?

Peter Cavellini 1 August 2013



Sort of half agree,maybe if the were gloss Black with Alloy coloured rims....?

MikeSpencer 30 September 2013

paul896 wrote: Love it wheels

paul896 wrote:

Love it wheels on the B4 but are they too big? Is it just me or would they look better being 1" or 2" smaller?

The B3 Biturbo runs on 20" wheels so I imagine these are the same. Maybe the lower body height of the B4 accentuates their visual size a bit more than on the B3?