How to Sign a Car Title as Power of Attorney

Signing over a vehicle title for someone else under a Power of Attorney (POA) looks simple, but the DMV has its own rules, and a federal odometer law catches a lot of people by surprise. Getting it wrong means a rejected transfer and a return trip to the DMV.

This guide covers the signature format, the vehicle-specific POA form most states require, the federal odometer rule, and the steps to get the transfer accepted the first time.

The Signature Format

On the title's assignment (seller) line, you sign on behalf of the owner, clearly showing you are the agent:

[Owner's Name], by [Your Name], attorney-in-fact

Example:

John Doe, by Jane Smith, attorney-in-fact

If the state's title form has a dedicated line for an agent or representative, use it. Never sign only your own name on the owner's line.

Most States Require a Vehicle-Specific POA

This is the part people miss: a general durable POA is often not enough to transfer a title. Most state motor-vehicle agencies have their own vehicle power of attorney form (sometimes called a "motor vehicle power of attorney" or "DMV POA") that must be filled out and submitted with the title.

Why the separate form? Title transfers are a common vector for fraud, so DMVs want a document that is specific to the vehicle (identified by VIN) and to the transaction. Before you sign, look up your state DMV's title-transfer instructions and download the exact form they require. Some accept a general POA; many do not.

The Odometer Rule That Trips People Up

Here is the rule that most often gets a transfer rejected: under the federal Truth in Mileage Act (49 CFR Part 580), the odometer disclosure on a title transfer generally cannot be signed by an agent under an ordinary power of attorney.

An agent can only sign the odometer statement through a special "secure power of attorney" process, and only in limited situations the regulation allows (for example, when the title is being held by a lienholder and is not physically available). For most ordinary sales where the seller has the title in hand, the owner must personally sign the odometer disclosure even if an agent handles the rest.

If the vehicle is exempt from odometer disclosure (typically vehicles over a certain age or above a certain weight), this restriction does not apply. Check the title form, where the exemption is usually noted.

Does It Need to Be Notarized?

Often, yes. Many states require:

• The motor-vehicle POA to be notarized, and
• Sometimes the title assignment itself to be notarized or witnessed.

Notarization requirements vary widely by state, so confirm with the DMV before you sit down to sign.

Step-by-Step

1. Check your state DMV's title-transfer page. Find out whether they require their own vehicle POA form and whether notarization is needed.
2. Confirm your POA covers vehicle transactions. A limited POA for something else won't work.
3. Complete the vehicle POA form (with the VIN) and have it notarized if required.
4. Sign the title's seller line as "[Owner's name], by [Your name], attorney-in-fact."
5. Handle the odometer disclosure correctly. If the vehicle is not exempt, the owner generally must sign it personally unless you qualify for the secure POA process.
6. Submit everything together: the assigned title, the vehicle POA, and any state-required forms, to the DMV or to the buyer for titling.

Common Mistakes to Avoid

Assuming a general POA is enough. Many DMVs require their own vehicle-specific form. Check first.

Signing the odometer statement when you shouldn't. This is the most common reason a POA title transfer is rejected. Unless the vehicle is exempt or you qualify for the secure POA process, the owner signs the odometer disclosure.

Skipping notarization. If your state requires the POA or the title to be notarized and you don't, the transfer bounces.

Signing only your own name. Always show you are signing on behalf of the owner as attorney-in-fact.

Using the POA after the owner's death. A POA ends at death; the vehicle then goes through the estate.

Frequently Asked Questions

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