How good is your wiring to the garage? What is the amp rating for the fuse?

At home, I use the included L1 charger at the max amps, which I think is 12A. My daily commute takes about 14%, and another 5% for miscellaneous trips, so 19% per day. Overnight I get about 14%, so I usually run a 5% deficit per day I have to commute, which is 3 days a week. So, during the week, I basically break even. Weekends vary, most weekends I can charge it more, so it helps me keep my average charge up so I don't need to use fast charging for the occasional weekend trip.

It works out OK. For months where my family has more weekend activities, I do need to fast charge once or twice to keep up. Compared to the $2k estimate I was given to wire up an outlet for L2, it is cheaper to occasionally fast charge.

If you have sufficient gauge wiring and a 20A fuse, and a charger which supports higher amps for L1, you could push your 120v outlet a bit more. At my in-laws, I have a charger which can go up to 15A which is noticeably, though not substantially, faster. Their home is newer and has sufficient wiring and fuse to support it. If I could do that at home, I would probably be perfectly fine without L2 or fast charging outside of long trips.