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EV Road calculateur de coût

Worked example — a Tesla Model Y Long Range from Los Angeles to Las Vegas on I-15 (270 miles): at 27 kWh per 100 miles the trip needs 72.9 kWh. Leaving home at 90% carries 60 usable kWh (after a 10% reserve), leaving just 12.9 kWh to buy on the road — one short Supercharger stop in Barstow or Baker (30 minutes) at the Tesla Supercharging average of $0.35/kWh. Total: $9.60 of home electricity + $4.52 of DC charging = $14.12, versus $33.19 for a 24-mpg gas SUV at $2.95/gal — a $19 (~57%) saving — while a 50-mpg hybrid costs $15.93 and ties the EV with zero stops. Verdict: in 2026 DC charging clearly beats gas when you start from home, and only converges with the hybrid if you lean entirely on premium networks like Electrify America ($0.48/kWh → $15.79 for this trip).

Model Y — energy needed
72.9 kWh (270 mi)
Charging stops (90% home start)
1 × 30 min
EV total (home + Supercharging)
$14.12
Gas SUV total
$33.19
Hybrid total
$15.93
Saving vs gas
$19.07 (≈ 72 SAR)

Entrées

Route (8 popular picks)
EV / PHEV

America's best-selling EV — ~270 mi real range, native Supercharger access.

Home-charge start: 90%

US residential average ≈ $0.16/kWh in 2026 — leaving home at 90–100% is the cheapest energy of the whole trip.

Charging network

$0.35/kWh 2026 average (site spread ~$0.25–0.50); most non-Tesla EVs now tap it via NACS ports or adapters.

Default scenario: Model Y · LA→Vegas · 90% home start — edit inputs
EV trip energy cost
$14.12
Los Angeles → Las Vegas (I-15) · 270 mi · Tesla Model Y Long Range
≈ 55 SAR (pegged rate)
Energy needed
72.9 kWh
From home charge (90% → 10% reserve)
60.0 kWh · $9.60
DC charging (Cheapest DC mix (Tesla Supercharging))
12.9 kWh · $4.52
Charging stops
1 × 30 min
Gas SUV (24 mpg @ $2.95/gal)
$33.19
Hybrid (50 mpg)
$15.93
The EV beats both. Tesla Model Y Long Range saves $19.07 vs the gas SUV and $1.81 even vs the 50-mpg hybrid — for 1 charging stop and a 30 min time penalty.
Per 100 miles — Tesla Model Y Long Range
Public Level 2 (destination)$5.40
Hybrid (50 mpg)$5.90
Tesla Supercharging (selected)$9.45
EVgo$11.34
Gas SUV (24 mpg)$12.29
Electrify America$12.96
Below ~20°F (-7°C) expect 20–30% more kWh per mile: heater load plus battery chemistry. A 1-stop summer route can become 2 stops in January.
Planning apps honesty: ABRP, PlugShare and the in-car/Tesla trip planners are good but not gospel — stall outages and per-site pricing change weekly, so carry ~15% buffer and one fallback charger per leg.
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FAQ

Is an EV road trip cheaper than gas in 2026?

Usually yes, but the margin depends on where the energy comes from. At the 2026 US average of $2.95/gallon, a 24-mpg SUV costs about $12.29 per 100 miles. A Model Y at the $0.35/kWh Supercharger average costs about $9.45 per 100 miles — roughly 23% cheaper — while the same car on $0.48/kWh Electrify America stalls costs $12.96 and actually loses to the SUV. Leave home at 90–100% on a $0.16/kWh residential rate and the blended trip cost drops toward $5–7 per 100 miles, where even a 50-mpg hybrid ($5.90/100 mi) cannot follow.

How many charging stops do I need from LA to Las Vegas?

The 270-mile I-15 run works as a one-stop trip in most modern long-range EVs. Worked example: a Model Y Long Range (75 kWh usable, 27 kWh/100 mi) needs about 72.9 kWh for the distance; leaving LA at 90% carries ~60 usable kWh after a 10% reserve, so only ~13 kWh remains for the road — one short Supercharger stop in Barstow or Baker covers it with 30 minutes of time penalty. A Lucid Air can skip charging entirely; a Bolt EV will want two slower stops.

What does Tesla Supercharging cost versus gas?

The 2026 Supercharger average is about $0.35/kWh (sites range roughly $0.25–0.50). For a Model Y at 27 kWh/100 mi that is ~$9.45 per 100 miles, versus ~$12.29 per 100 miles for a 24-mpg SUV at $2.95/gal — the EV saves about $2.84 per 100 miles on pure DC charging. On a 1,000-mile week that is roughly $28, and the gap widens sharply whenever you start each day from a $0.16/kWh home plug instead of a Supercharger.

Can non-Tesla EVs use those networks, and what do EA and EVgo cost?

Yes — most 2026 EVs either ship with a NACS port or run a validated adapter, so Superchargers are increasingly brand-agnostic. The legacy CCS networks stay relevant for older cars: Electrify America averages ~$0.48/kWh and EVgo ~$0.42/kWh, both with membership tiers that knock 15–25% off. The honest caveat: per-site pricing varies far more than gas stations do, and a single off-interstate charger priced at $0.56 can flip the math on a short leg.

Which planning apps should I trust for an EV road trip?

Use them, but do not worship them. A Better Routeplan (ABRP) is the best for energy modeling, PlugShare for crowdsourced stall health and photos, and the car's built-in planner (Tesla's especially) for real-time battery conditioning — yet all three lag real-world outages, and prices refresh weekly at best. The honest habit: plan with a ~15% range buffer, note one fallback charger per leg, and treat any single-stall desert location as a risk, not a plan.

How much range do EVs lose in winter?

Plan for a 20–30% penalty below roughly 20°F (-7°C): cabin heating is pure battery drain and cold cells both deliver and accept charge worse. Practical numbers: a Model Y rated for 270 real summer miles becomes a 190–215 mile car in a January blizzard, and charging stops stretch from 20 to 35+ minutes because the pack must be preconditioned first. The calculator's consumption fields are EPA-like — add the winter factor on top for cold-season trips.

How much does starting each day at 100% from home save?

A lot — it is the single biggest lever. The 2026 US residential average is about $0.16/kWh versus $0.35 at a Supercharger and $0.48 at Electrify America, so every mile driven on home electrons costs less than half a Supercharger mile. Leaving at 90–100% instead of 60% adds 30–40 kWh of cheap energy on a 75 kWh pack — worth $4.80–6.40 at home rates versus $10.50–16.80 if you had to buy it mid-route on DC.

When does gas still win an American road trip?

Five honest cases: very long remote desert stretches (Denver→Vegas on US-93) where the only 350 kW stall is broken or priced at $0.56/kWh; cheap-gas states like Texas (~$2.50/gal) with a 50-mpg hybrid; trips in an efficiency-poor EV like a pickup at 45+ kWh/100 mi on $0.48 pricing; winter trips that inflate consumption 20–30%; and any itinerary too time-pressed for 30–45 minute charge stops. A Prius Prime at 50 mpg beats a Mach-E on Electrify America pricing — that row in the calculator shows exactly when.

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