Suggested

Becoming a racing stable (hiring and rtaining of new young drivers)

Here is a guide to recruiting young drivers and training them up to become your number 1 driver who wins all the championships:

Don't.

Here's why:

Upgrading your HQ to the point where you can hire a young driver costs money and takes 5 days - and while you're doing this, you can't upgrade other more important things.
once you have the upgrade, it costs 1 gold to generate a driver and you can't even see all his/her stats. You can see talent, which is important and i guess what we're all looking for. but then it costs 15 gold to actual bring them onto payrol. Thats 16 gold and the cost of upgrading your HQ so far.
Now you have a second, or third driver on the payrol whose contract will go down by 1 race, even if you don't actually have them race. You'd hope their wage is much lower because they are new recruits but i don't find that. I've had 2 so far thati've hired and they have been 2 star rated, but both had talent of 12 (equal to my two current veteran drivers). Both of these guys would require training for about 3 days before their stats were equal to the average driver for my league (that's 3 races in my daily league), so their contract would then last for 17 races. I have found that the wages for these new drivers is about 350k, which i contrast to my current active drivers, at 417k - and yet they are 7 levels lower.

By the time they are ready to become full drivers and i give them one of my car slots I can see the benefit - i've just taken 417k off the wage bill in return for 350k. All is well. Contract renewal time comes though, and at this point the contract jumps up to 469k. You could argue that this increase is still lower than my old driver would have had but at this point i've spent the money to upgrade HQ, 16 GOLD and had 3 drivers on the wage bill for the whole time that this recruit was in training.
Conclusion, it simply isn't worth it when the alternative is to spend just 9 gold insta-buying a driver from the transfer pool when the right one comes available.

I hope I was clear, and am open to comments from others. Am I missing something? Is it how you've experienced it?

I strongly disagree. One point you're right is it doesn't pays to promote talent 12 drivers. You want talent 20, maybe talent 19 if you're still a good way off from manager level 20 and that driver is age 17 or some other reason, but nothing else.

First it costs you quite some token to get that driver, 20 to 25 on average I suppose, and you have to train them. In my case (level 16) a good season so the first 20 races contract went just into training. That's 20 times 312500 in the case of both of my youth drivers. So the drivers cost 28 million in the best case (first scout is a hit) to 40 million each. Current wage after first renewal 344k, age 18 and 17.
What's if I want to buy one. Well there is actually one talent 20 driver, age 20, available. Costs 11 million buy and 654k wage and needs about 10 races training to be fit to take a seat, one token minimum (1.3 million). Inititial costs 18.8 million.
Finally I could have kept my old driver until he retired, age 30, Talent 20. No initial costs. Wage 1.07 million.

Now I plan to run my youth drivers for about 200 races but let's look into the next 50 and 100 races. Both my youth and old (would) have new contracts, the transfer would have 10 races left on his hiring contract and needs 40 on a renewed contract which always seems to be an 10% increase, it was so far at least.

Youth: 28-40 million initial costs + 17.2 million wage = 45.2-57.2 million (50) + 18.9 million = 64.1-76.1 million (100)
Transfer: 18.8 million initial costs + 35.3 million wage = 54.1 million (50) + 38.8 million = 92.9 million (100)
Old: 0 million initial costs + 53.5 million wage = 53.5 million (50) + 58.9 million = 112.4 million (100)

So after one contract length (about 3 seasons) youth depends on scouting luck, but once the time enters the second renewal contract they take the lead and from then on the difference is just getting larger.

Edit: To be fair there should be mentioned that without scouting yiu could safe the expenses building the YA. I don't know anymore what each level costs but from the costs of my next level I guess it's around 11 million up to level 20.

is it possible to get a 20 talent driver using a 1star HQ youth facility? What about if you factor in how many gold it actually costs to scout a good enough driver by your standards? Perhaps what can be best summised is that training young drivers is only profitable at much higher levels. I'm currently level 10 and the most talented driver i have ever seen is 12 (they are usually 8 when scouted) - and on top of that they all have had 3 for experience which doesn't seem to be trainable and doesn't seem to increase naturally given races and aging.

If driver recruitment is indeed better done at higher levels then I can accept that - i guess at higher levels it is harder to run in the black without thinking critically about your actions, and this aspect of the game really would help that if you example is representative

You could get one but I wouldn't recommend it. The level of the YA determines the chance of higher talents. So it's 5 star YA or don't do it. I wouldn't recommend spending building time fot YA below level 12 anyway, but that's my opinion, other more experienced manager did recommend it already from around level 10 on. From around level 14 or 15 even with daily races you have all other important building at the cap anyway and enough time left to get YA up as well. I even finished offices now.

3 Experience is about what you get. It does increase by 0.1 each race they have a seat, so 1 every 10 races they drive. Even with level 16 that low experience isn't a bad thing though because it counts into the drivers level, as does talent, so you can train everything else quite a bit higher before running into the training soft cap. For my driver it means he was slightly faster than the more experienced but lower other mental skills driver.