What do I need to use EV vs Gas?

The two candidates' prices; Annual miles; Electricity reality; Ownership horizon.

Is EV vs Gas free to use?

Yes — run it free in the browser playground (no API key needed for the sponsored trial, or bring any provider key), or install it into Claude Code, Cursor, ChatGPT and more via npx pm-claude-skills. MIT-licensed and open source.

EV vs Gas

Q: How do I know the EV vs Gas output is good?

The skill verifies itself against its own quality checks: The gas comparator is genuinely the same vehicle class; Charging mix is asked about, and public-heavy charging is priced honestly; The crossover is read against the user's stated ownership horizon; At least one sensitivity line varies miles or charging rate.

🔵 Stable🕐 updated 2026-07-18 🔷 SkillSpec L3 ⚙ ships an executable helper pm-calculators

Compare an EV against a comparable gas car on total cost — upfront gap after incentives, energy vs fuel per year, maintenance delta, and the crossover year when the EV pulls ahead (or doesn't). Use when asked is an EV worth it, EV vs gas total cost, when does an EV pay for itself, or should my next car be electric. Produces the year-by-year cumulative comparison from the script, the crossover year, the per-mile energy math, and the honest not-modeled list.

▶ Run it free — no key needed 📝 Grade your existing draft View SKILL.md ↗

What to give it

▸The two candidates' prices — the actual EV and the *comparable* gas car (same class — comparing a luxury EV to an economy gas car answers a different question); applicable incentives, flagged as verify-eligibility

▸Annual miles — the single biggest lever; low-mileage drivers should see how far the crossover moves

▸Electricity reality — home charging rate if they have it, or an honest blended rate if they'd rely on public charging (often 2–3× home rates — it can erase the fuel advantage; say so)

▸Ownership horizon — a crossover at year 6 means opposite things to a 3-year and a 10-year keeper

✅ The bar it holds itself to

Every skill in this library self-verifies — these are this skill's own quality checks, straight from its definition.

✓The gas comparator is genuinely the same vehicle class

✓Charging mix is asked about, and public-heavy charging is priced honestly

✓The crossover is read against the user's stated ownership horizon

✓At least one sensitivity line varies miles or charging rate

✓Incentives carry the verify-eligibility flag

⚠️ What it refuses to do

Do not compare across vehicle classes and call it an EV premium

Do not default everyone to home-charging rates — it's the assumption that most flatters the EV

Do not present the crossover as a verdict for short-horizon owners — before the crossover, the gas car is winning, and some owners live entirely there

Do not let advocacy (either direction) into the arithmetic — the model is agnostic; the not-modeled list keeps it honest

Do not model fuel/electricity price predictions — drift is named, not forecast

Install

npx pm-claude-skills add --agent claude   # or codex · cursor · gemini · hermes
# or one-line MCP (every skill, any client):
claude mcp add pm-skills -- npx -y pm-claude-skills-mcp

Related skills

🔌 Embed this skill

Drop this on your blog, docs, or site — it renders a "Run this skill" card:

<div data-pm-skill="ev-vs-gas"></div>
<script src="https://mohitagw15856.github.io/pm-claude-skills/embed.js" async></script>

💬 Discussion

EV vs Gas is one of 625 open-source professional AI agent skills — all SkillSpec L3. Try them all in the browser · ⭐ Star on GitHub · Browse the full catalog