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Does anyone know if the Quattro Sports Differential is a standard item in the UK on the RS4 B9?

Been looking at a number of 2nd hand RS4 B9's and it often seems to be missing from the spec sheet and the dealers don't seem to know, the following article seems to suggest it was an option in some countries but would be standard in the UK - https://www.carmagazine.co.uk/car-revie ... 18-review/

If I take a look at the Audi Ireland Configurator for the RS4 it's an option and I recall it being an option within the UK configurator but impossible to check now.

Does anyone know?

Yes, the sports differential was standard on UK cars.
I have the sales brochures and UK media packs and they confirm it under "Key features that come as standard".

The power of the 2.9 TFSI is channelled to the permanent all-wheel drive system with standard sport differential via an eightspeed tiptronic with optimised ratios.

and

quattro with Sport differential – the electronically regulated Sport differential distributes variable amounts of driving force to each rear wheel, improving stability and agility especially when cornering. It ensures better direct steering characteristics and, thanks to less steering effort, more agile handling

Yep - it’s on mine as standard.

Thanks both for confirming