Car Dogs tools

Car Dogs Tools

Simple tools for buying, owning, and understanding your car. Free, no sign-up, and every result comes with what it means and what to do next.

Advice is always free. Partners pay us only if you choose an intro.

22 tools, grouped by what you're trying to figure out. Nothing here ends on a bare number — you always get a plain-language read and your next move.

Buying tools

Work out what a deal really costs before you sign anything.

Payment calculator

See the real monthly payment on a price, rate and term.

You give: Price, down payment, trade, APR, term, ZIP
You get: Monthly payment, total interest, amount financed

Run a payment

Affordability calculator

Start from the payment you're comfortable with and work backwards to a price.

You give: Comfortable payment, down payment, APR, term
You get: Price range to shop, total financed, budget verdict

Find my budget

Deal calculator

Build the whole deal — fees, add-ons and all — then get an honest review.

You give: Vehicle, cash/finance/lease terms, protections, fees
You get: Out-the-door math plus a verdict on what's padded

Build my deal

Lease vs buy

Compare a lease payment against financing the same car.

You give: MSRP, selling price, residual, money factor, miles
You get: Lease payment, due at signing, side-by-side with finance

Compare lease and buy

APR vs rebate

Decide whether the cash rebate or the low-rate offer saves you more.

You give: Price, rebate amount, promo APR, bank APR, term
You get: Which offer wins and by how much

Compare the offers

Ownership cost

Add up what a car costs you per month once fuel, insurance and upkeep are in.

You give: Payment, fuel, insurance, maintenance, miles
You get: True monthly and yearly cost of ownership

Estimate my cost

Value tools

Know what your car is worth before anyone makes you an offer.

What's my car worth?

Get an estimated value range before you trade or list it.

You give: Year, make, model, mileage, condition, ZIP
You get: Trade-in, private party and retail market ranges

Get my value

Keep or trade

See whether keeping your current car actually beats replacing it.

You give: Value, loan balance, payment, repairs ahead, replacement cost
You get: Monthly cost of each path and a clear recommendation

Compare keep vs trade

Depreciation

Project what your car will be worth in one, three and five years.

You give: Purchase price, year, annual miles
You get: Projected value curve and dollars lost per year

See depreciation

Trade-in calculator

Check how your trade, payoff and equity change the deal.

You give: Trade offer, loan payoff, price of the next car
You get: Positive or negative equity and its payment impact

Check my trade

Ownership tools

Budget the running costs and stay ahead of the shop.

Fuel cost

Turn your weekly miles and real MPG into a monthly fuel number.

You give: Miles per week, your real MPG, price per gallon
You get: Cost per month, per year and per mile

Estimate fuel

Maintenance

See what service is due at your mileage and what it usually costs.

You give: Current mileage, miles per year, vehicle age
You get: Next services due, timing and typical price ranges

Check what's due

Repair cost

Check a quoted repair against typical parts-and-labor ranges.

You give: Repair job, shop type, your quote
You get: Typical range, where your quote lands, questions to ask

Check a repair quote

Check this repair

Tell us what the shop said and what they quoted, and get a straight read.

You give: Symptom, what the shop said, the quoted price
You get: Price read, urgency, questions to ask, what to do next

Check this repair

Road trip cost

Budget a trip before you leave — fuel, wear and the extras.

You give: Trip miles, MPG, gas price, nights, travelers
You get: Fuel cost, wear-and-tear cost, total trip budget

Plan a trip budget

Vehicle check tools

Look a car — or a piece of paper — over before you commit.

Recall check

Find open safety recalls on a VIN, straight from the federal database.

You give: 17-digit VIN
You get: Open recalls, what each one affects, what to do

Check for recalls

Photo check

Send a photo of a deal sheet, estimate or problem and get a straight read.

You give: One or more photos plus your question
You get: What it says, what's fair, what's padded, what to say next

Upload a photo

Deal check

Have a quote or worksheet reviewed line by line before you sign.

You give: Price, fees, add-ons, rate and term from the paperwork
You get: Verdict, the lines to push back on, your next move

Check my deal

VIN check

Decode a VIN to confirm the car is what the listing claims.

You give: 17-digit VIN
You get: Year, make, model, engine, plant and build details

Decode a VIN

AI tools

Ask in plain words. A real Car Dog is one tap away from every answer.

Ask a Car Dog

Ask any car question and get a straight answer with your next step.

You give: Your question, in your own words
You get: Plain-language answer, safety flags, recommended next step

Ask a Car Dog

Vehicle recommendation

Answer a few questions and get vehicles that actually fit your life.

You give: Budget, body style, priorities, ZIP
You get: Matched vehicles with why each one fits

Get matched

Symptom assistant

Describe what your car is doing and find the likely cause.

You give: The symptom — noise, shake, smell, warning light
You get: Likely causes, urgency level, cost range, next step

Find my symptom

Car financing Buying guides California fees & paperwork Ask a Car Dog

Ask a Car Dog (AI)

Ask anything about your car decision

Straight answer first, then the reasoning — free, and it remembers what you've already told us.

Rather talk to a person? Chat with a real Car Dog — free, and we'll carry this over.