Firstly, saying hello. New to the forum as I've recently picked up a 2017 S5 Sportback. hoping to get and share useful info!

Now down to business. Took the car in for an oil service and during a quick look over the car, they identified a broken rear left coil spring. Only broken right at the bottom so not really noticeable visibly or when driving ... however, does need to be replaced as that's a MOT failure.

My and my brother are quite handy with cars so this is something we can definitely do ourselves but I'm really struggling to find the correct part aftermarket. Genuine Audi springs are almost £180 each and I want to change both as I'm not sure if the current springs are genuine Audi and wouldn't want to mismatch. However, at £360 for the pair, was hoping to find some lower priced alternatives.

 

Can anyone recommend any that they have used? I'm not interested in lowering springs. Just ones that have the same spec as the Audi ones but obviously less harsh on the pocket.

I did look online and a few options came up but noticed the specs vary so I'd want to be sure they are correct for this car as I'm assuming the S5 springs would be different to a regular A5.

https://www.autodoc.co.uk/car-parts/coil-springs-10213/audi/a5/a5-sportback-f5a/123113-s5-quattro?criteria[100][]=HA

Any way I can find out the Audi part number so I can match them up?

Any help appreciated. Thx in advance.

Edited May 22, 20251 yr by Bal_

See if you can cross reference it here. There are huge numbers of spring options available, depending on electronically controlled dampers, standard, sport, etc.

The springs should have coloured dots. Frustratingly LLL Parts don’t give a particular breakdown in this instance. Double check with your engine code. This is for 2017 S5 Coupe/Sportsback. https://www.lllparts.co.uk/catalogs/audi/RDW/A5CO/897/5

Don’t under-estimate work to fit. It’s a Quattro, so space is limited. You’ll need coil spring compressors and a bottle jack to extend the lower arm. I’d disconnect the shock absorber too. Replace the rear spring seats too, likely they are corroded. Check bump stops while you are there. No reason to adjust the rear subframe, but if you do, only one bolt at a time. Also watch you don’t release the eccentric bolt on the lower arm or you’ll need to get the camber realigned. You might want to get the car 4 wheel tracking done for peace of mind afterwards.

In terms of brands, Suplex has good reputation.

Edited May 23, 20251 yr by spartacus 68

Thanks. That's really helpful. Changing the front discs this weekend so while I'm at it, will jack it up at the rear and see what markings I can find on the existing springs and hopefully match them against the LLL parts website.