Short answer: For day‑to‑day 405‑freeway commuting (and you’ve already got carpool access), the Tesla Model 3 Performance is the smarter, happier choice. It’s smaller, easier to thread through traffic and parking garages, more efficient, still insanely quick, and far less expensive to buy and run—while giving you adaptive dampers and ventilated sport seats in the latest refresh. The Model S Plaid is a spectacular rocket, but it’s larger, heavier, pricier, and its extra speed doesn’t materially help your commute. 

Why the Model 3 Performance wins the 405

Side‑by‑side (commuter‑centric)

What matters on the 405Model 3 PerformanceModel S PlaidCommuter takeaway
Size / weight185.8” L, 72.8” W, ~4,046 lb197.7” L, 78.2” W, ~4,828 lbSmaller M3P is easier to live with in traffic & parking. 
Turning circle11.7 m (38.4 ft)12.3 m (40.3 ft)M3P is a touch nimbler in tight spots. 
EPA est. range~298–303 mi~359 miPlaid has more buffer; M3P still covers typical LA commutes easily. 
Real‑world highway range (75 mph)260 mi280 miBoth fine; Plaid lasts a bit longer between stops. 
Efficiency (EPA combined)112 MPGe107 MPGeM3P saves a few bucks per month—small but real. 
Ride & NVHAdaptive dampers; quieter than beforeAdaptive air suspension; very comfortableBoth comfortable; M3P is firm‑controlled, Plaid plush‑controlled. 
SeatsVentilated sport frontsHeated & ventilated frontsBoth cool you down in summer gridlock. 
0–60 mph (tested/claimed)~2.8–2.9 s~2.1 sFun fact; won’t change your commute. 
Peak DC fast‑charge250 kW250 kWCharging stop lengths are broadly similar. 
Typical new price (2025)~$54,990~$99,990M3P is far better value for a commuter. 

405/HOV specifics you should know

Bottom line (with a smile 😄)

If your mission is fast, stress‑light commuting on the 405, the Model 3 Performance is the sweet spot: nimble size, fresh adaptive suspension, excellent efficiency, ventilated seats, and a price that leaves room for life. The Plaid is a jaw‑dropper and a wonderful long‑range cruiser, but for a daily HOV grind, its extra size and cost don’t deliver extra commute joy.

If you want, I can tailor this to your route (daily miles, where you enter/exit the 405, typical charging setup) and run a quick cost‑per‑month and “time‑to‑charge” comparison that matches your exact routine.