I see a notification that a thread on rear beam bushes has been started, I sprint to read it. I'm sure
@Connor H will be here soon too - unless he's replied before I finish typing this!
In all honesty, it's one of the more satisfying jobs I've done, although it is a difficult one if you don't want to disconnect the brake lines. If you're happy disconnecting them and bleeding the system afterwards, it's a piece of cake - seriously. If you want to do it while it's on the car, it's not too bad a job - it just involves a lot of time on your back under the rear end, so it's a bit cramped.
First off, you're probably not going to fail your MoT. Mine were proper shagged - and visibly so - and they still got through the MoT for a few years without anyone remarking on it. They just don't seem to pay much attention to them.
For a garage to do it, they'd be looking at disconnecting the rear brake lines, which would mean a bleed when it's all back together. That's around £40 without even blinking. Then they'd have to take off the rear shocks and the springs before finally getting round to replacing the bushes. It's not a hard job or a technical job - it just takes time, and that's what you'll be paying for. I'd imagine they'd charge for about two to three hours, so £150-250 maybe depending on the garage's hourly rate.
I fitted eBay Floflex bushes, which were sold as being for the
Cupra, and mine is the 150 FR TDI, but I'm not sure about the
Cupra R specifically. I understand the bushes are sold in two sizes - 69mm and 72mm - but from all the threads I've read on fitting them, there's no real difference and both will fit.