Negotiate a car purchase without getting played — know the real target price, handle the dealership tactics, and keep the financing and add-ons from eating your savings.
SkillScore91Maintained
Automatic
◆Personal Assistant pack
Last verified 9/1/2026
What it changes
Passed 20 of 22 test cases with the skill, and 11 of 22 without it.
Without skill50%
With skill91%
Checks it passed that the model alone missed
Instructs keeping financing arrangements separate from vehicle price negotiation.
Recommends keeping vehicle price negotiations unbundled from financing and trade-in.
Concludes with callout block advising verification of current prices, incentives, and rates.
and 11 more in the full report
9 fixed11 passed either way2 still failing0 broke
Pass-rate lift
+41 pp
Tokens
+27%
Agent turns
0%
Response time
-13%
Model gemini-3.6-flashMeasured 9/1/2026v120 of 22 cases passed with skill
Tokens, turns and time describe resource use, not a dollar price.
See it in action
One of 9 test cases the skill fixed. Same model, same prompt, with and without the skill.
1 of 9
Prompt
I am going to buy a used 2022 Honda CR-V EX-L next week. I'll be trading in my 2015 Civic and planning to finance the remaining balance, though I haven't secured a bank loan yet. I need a comprehensive negotiation roadmap before heading into the dealership. Please provide a clear summary showing my target out-the-door price approach, scripts to counter standard salesperson tactics, guidelines on keeping the vehicle price, trade-in, and loan completely unbundled, a breakdown of dealer add-ons to refuse, and how to establish my walk-away limit.
What was checked, without and with the skill
Checked
Without skill
With skill
Header format uses `### Car negotiation:` specifying the 2022 Honda CR-V EX-L, used condition, trade-in status y, and financing needed.
Missed
Passed
Output structures strategy with bold headers for Target, Expect & counter, Keep separate, Get pre-approved, Decline, and Walk-away.
Missed
Passed
Output ends with a callout note block advising to verify pricing, incentives, and finance rates before going.
Missed
Passed
case-01 · gemini-3.6-flash · 9/1/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md69 linessingle file
Car-Buying Negotiation
Dealerships negotiate cars for a living; most buyers do it every few years — that asymmetry is the whole game. This levels it: research the real target price, negotiate the out-the-door number (not the monthly payment), keep the trade-in and financing as separate battles, and decline the high-margin add-ons — with the confidence that you'll walk if the deal isn't right.
What This Skill Produces
A target-price approach — how to research a fair price and negotiate the total out-the-door cost, not the monthly payment
Tactics & counters — the common dealership moves (monthly-payment focus, four-square, "let me ask my manager," urgency, lowball trade) and how to handle each
Separate the battles — negotiating price, trade-in value, and financing independently so they can't be shuffled
Add-ons to decline — the high-margin extras (paint protection, extended warranties, fabric guard, etc.) and which are worth it
Financing guidance — get pre-approved so the dealer's rate must compete, and watch the loan term/total cost
A walk-away plan — the number and the readiness to leave, which is your real leverage
Required Inputs
Ask for these if not provided:
The car — make/model/trim, new or used, and any specific one you're eyeing
Your research — do you know the fair/market price, or need the approach
Trade-in — are you trading a vehicle
Financing — cash, dealer finance, or pre-approved elsewhere
Your position — how urgently you need it, and your walk-away willingness
Framework: Out-The-Door Price, Battles Separated, Ready To Walk
Negotiate the total, not the monthly. Dealers steer to monthly payments to hide the real price and stretch the term — anchor on the out-the-door number.
Know your target first. Research market/fair pricing so you negotiate from a number, not vibes; a slow-moving or ideal deal informs your target.
Keep the three deals separate. Settle the car price before discussing trade-in, and arrange financing independently — bundling is how margin hides.
Get pre-approved financing. A pre-approval forces the dealer's rate to beat it; without it, they profit on the loan.
Decline the add-ons. Most F&I extras are high-margin and optional — decline politely; evaluate the few (like a warranty) on their own merits.
Be ready to walk. A firm walk-away number and genuine willingness to leave is the strongest leverage you have — and verify current prices/rates, which move.
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