Car buying service in
Houston, Texas.
Tell Motrix the car. Motrix negotiates with Houston-area dealers for you, gets every price itemized in writing, and hands you one out-the-door number to approve. Deal and Pro: $0 until you sign.
01Buying a car in Houston: what is local
Harris County is the most populous county in Texas, and the Houston market runs well past it into Fort Bend and Montgomery counties. That spread is the leverage: the same car can carry a different selling price, documentary fee and add-on sticker at stores a short drive apart.
Texas taxes the car itself the same everywhere in the state: 6.25% of the sales price minus your trade-in, with no city or county add-on. What does differ by county is the local registration fee. Harris County’s is $11.50 for 2026 on top of the $50.75 base, per the TxDMV fee chart.
02Houston car sales tax in 2026
Texas charges a 6.25% motor vehicle sales tax, figured on the sales price minus any trade-in allowance. There is no city or county add-on to it, so a Houston buyer pays the same rate as any other Texas buyer, and shopping a dealer in the next county changes the price and fees you can get, not the tax.
On a dealer sale the dealer collects the tax from you. If you are moving to Texas with a car already registered in another state, the Comptroller lists a $90 new resident tax in place of use tax.
| Worked example | Houston (Harris County) |
|---|---|
| Taxable price (sales price minus trade-in) | $35,000 |
| Motor vehicle sales tax, 6.25% | $2,187.50 |
Source: Texas Comptroller, Motor Vehicle Sales and Use Tax (Tax Code ch. 152). Checked October 2026. This is general information, not tax advice; the dealer and the county tax assessor-collector compute the final figure.
03Documentary fee: the $225 rule
Texas regulates the documentary fee through the Office of Consumer Credit Commissioner (OCCC). Under 7 Tex. Admin. Code §84.205, a documentary fee of $225 or less is presumed reasonable. A dealer that wants to charge more must first file a cost analysis with the OCCC showing the higher fee is reasonable, and carries the burden of proving it.
So a Houston quote with a documentary fee above $225 is not automatically illegal, but it is fair to ask whether that filing is on record. Either way, compare stores by the out-the-door total, not the fee line, and if a store will not move its fee, ask for the same amount off the selling price.
04Title and registration
These are state and county fees, not dealer fees. They should match the TxDMV schedule; anything the dealer adds on top is a dealer charge.
| TxDMV fee (passenger car or light truck to 6,000 lb) | Amount |
|---|---|
| Base registration, 2026 | $50.75 |
| Harris County local fee | $11.50 |
| Base plus local | $62.25 |
| Title application (depends on the county) | $28 or $33 |
| Nearby county | 2026 local fee | Base plus local |
|---|---|---|
| Harris County (this page) | $11.50 | $62.25 |
| Fort Bend County | $11.50 | $62.25 |
| Montgomery County | $10 | $60.75 |
Other small state fees can apply depending on the vehicle and your situation. Ask the dealer to label which lines on the quote are TxDMV or county tax office fees.
Sources: TxDMV, Texas Registration Fees, effective January 1, 2026; TxDMV title application fee. Checked October 2026.
05Add-ons to look for on a Houston quote
Dealer-installed add-ons usually appear as a second sticker next to the factory window sticker, or as one bundled package line on the quote. The ones to question:
- Window tint. It can be worth having, but price it against an independent shop.
- Paint and fabric protection coatings.
- Nitrogen tire fill (see the dealer nitrogen fee).
- VIN etching and theft-deterrent devices.
- A bundled dealer add-on package with a friendly name and a round number.
Pre-installed does not mean you must pay for it. Ask in writing for the item to come off, or for an equal cut to the selling price. Paste any quote into the free Fee Checker to see every dealer fee and add-on line flagged.
06How Motrix works in Houston
- Tell Motrix the car: make, model, trim, and how you plan to pay.
- Motrix negotiates with the dealers for you, so you are not trading calls with salespeople.
- Every price comes back itemized in writing: selling price, documentary fee, add-ons, tax, title and registration.
- Motrix contests add-ons you did not ask for and pushes the total down.
- You approve one out-the-door number and go to the dealership only to sign.
Motrix is online, so there is no office to visit. Deal and Pro: $0 until you sign. The Deal plan is $0 today, $399 only when your deal closes ($299 for the first 100 buyers).
Teacher, nurse, first responder, military or government worker? Verified members get $100 off a deal through the Motrix heroes offer.
07Two closed Motrix deals
Results depend on the car, the market and the dealers.
Houston car buying questions
What is the sales tax on a car in Houston?
Texas charges a 6.25% motor vehicle sales tax on the sales price minus any trade-in allowance, the same rate everywhere in the state (Texas Comptroller). On a $35,000 taxable price that is $2,187.50. On a dealer sale, the dealer collects it.
Will I pay less tax buying from a Fort Bend or Montgomery County dealer?
No. The Texas motor vehicle sales tax is a flat 6.25% of the sales price minus any trade-in allowance, wherever in Texas the dealer is (Texas Comptroller). Shopping across the Houston area changes the selling price, the documentary fee and the add-ons you can get, not the tax rate.
How much is registration for a Houston address?
The TxDMV base registration for a passenger car or light truck up to 6,000 lb is $50.75 for 2026, plus Harris County’s local fee of $11.50, so $62.25 before other state fees. The title application fee is $28 or $33 depending on the county.
How does Motrix work for a Houston buyer?
You tell Motrix the car you want. Motrix negotiates with the dealers for you, gets itemized out-the-door prices in writing, contests add-ons you did not ask for, and brings you one number to approve. You only go to the dealership to sign. Motrix is online, so there is no office to visit.
What does Motrix cost?
Deal and Pro: $0 until you sign. The Deal plan is $0 today, $399 only when your deal closes ($299 for the first 100 buyers). Pro is $599, also owed only when a deal you accept closes. Concierge ($999) is paid to start.
Can I check a Houston dealer quote for free?
Yes. Paste or upload the quote into the free Motrix Fee Checker at usemotrix.com/fee-scanner. It flags the documentary fee, add-ons and anything that looks padded.