I work on our cars - in all fairness, even though I have a cordless Bosch 18v impact driver that "says" 200Nm of torque, I've never used it on a car. I've found for 99% of what I need to remove,
- a 3/8" ratchet is ok,
- If it looks like it won't, then the 3 foot 1/2" breaker bar works (and I have a 3 foot length of steel pipe to slide over it if it's a hub bolt or something),
- maybe twice I've got the 240v impact driver out (450Nm), but that's more likely to snap the bolt if it's that stuck.
What's actually on my list of things to buy for the annoying rusted on bolts\nuts is one of those induction heater gadgets that will get the nut\bolt head glowing cherry red in a few mins and then some wax or Plusgas should help it come out without any further issues.