FL2 TD4 failed MOT this am with a broken suspension coil,, the indie said just to replace the broken one and not the front pair.. It's £100 to do the job.

Should I get both done??

Yes, I would, handling and appearance will suffer otherwise.

Yes. Definitely.It's always good practice to replace things like shocks, springs and brakes across the same axle. Past: FL2 TD4 HSE Auto
Evoque SD4 Dynamic Lux Auto
Present: Audi A3 S Line.

A pair

Metal work hardens and degrades so its that fine line between age of component, type of usage, safety and money.

A lot of the early ones still go for £5,000 so its not like you are already into running one as that is all your money can buy, in fact add another grand and you can run a brand new car with 3 years warranty.

At 19 and skint all the time it would have been one I got off a scraper but today it would be a pair as these motors can move if pushed and they have a lot of weight behind them when it comes to bringing them to a stop. Chance it could sit low at one corner as well trying to match in one coil spring. FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

My previous car (a Ford Mondeo) had a broken coil after 250000 km. My garage just replaced the broken one. The car did not feel or appear different, it handled and appeared just as before. Drove 50000 km more before trading it in (for a FL2), no other coils failed.

My wife's pug 207 56 reg 47k miles had an MOT failure and both rear springs had gone. I can only assume that they both went during a 12 month period but she didn't notice any difference in ride height or handling (of the car, that is). 3 x FL1 2 manual + 1 auto
5 x FL2 4 manual + 1 auto
Now Discovery Sport P250 MHEV SE