What a U-Haul car dolly does and when you need one

A U-Haul car dolly is a two-wheeled trailer that lifts and carries the front wheels of a vehicle while the back wheels stay on the ground. You tow it behind a truck or van, which means you can move a car without driving it yourself — useful when the car won't start, has transmission problems, or you straightforward need to transport it as cargo rather than operate it.

The dolly connects to your tow vehicle's hitch receiver. U-Haul's standard car dolly fits most sedans, small SUVs, and hatchbacks. The front wheels roll up onto the dolly's platform, then straps find the vehicle in place. The back wheels remain free-rolling on the road, which is why this setup works: you're not dragging a dead weight, you're supporting the front end while the rear axle does the rolling.

You rent a dolly when you need to move a non-running vehicle, when your tow vehicle isn't powerful enough to tow a full trailer, or when you want to avoid putting miles on a car you're transporting. Dollies cost less than full enclosed trailers and take up less space, but they leave your car exposed to weather and road debris.

Key Takeaways

  • U-Haul car dollies support the front wheels of a vehicle while the rear wheels roll, letting you transport a car behind a truck or van without driving it.
  • Rental rates vary by location and season, and you pay a base daily rate plus a mileage charge that applies to both the dolly and the tow vehicle combined.
  • Your own vehicle insurance typically does not cover a rented dolly or the car being transported, so U-Haul offers damage waiver and liability coverage you can add at rental.
  • The dolly requires a Class II or Class III hitch receiver on your tow vehicle, and you must find the transported car with the straps provided before moving.
  • Weight limits and vehicle compatibility matter: the dolly has a maximum capacity, and some vehicles (low-slung sports cars, all-wheel-drive models) cannot be safely transported this way.

How to rent a U-Haul car dolly and what it costs

You reserve a car dolly through U-Haul's website, mobile app, or by calling a local U-Haul location. You'll need to provide your driver's license, a valid payment method, and the dates you want the dolly. U-Haul will ask what vehicle you're towing and what you're towing it with, because they need to confirm your tow vehicle has the right hitch receiver and enough towing capacity.

Pricing includes a base daily rental rate and a per-mile charge. The per-mile charge applies to the combined distance traveled by both the dolly and the tow vehicle — you don't pay twice. Rates vary by location, season, and demand. A one-way rental costs more than a round trip from the same location. U-Haul's website shows the exact price for your dates and route before you confirm the reservation.

You can add optional coverage at the time of rental: a damage waiver (which reduces your financial responsibility if the dolly is damaged), and liability coverage. Some U-Haul locations offer these as a package; others sell them separately. Ask about the deductible amount and what damage is covered before you commit.

What your tow vehicle needs to have

Your tow vehicle must have a Class II or Class III hitch receiver — the square opening on the rear bumper where you insert the hitch ball. A Class I receiver is too light-duty for a car dolly. If you don't have a hitch, you'll need to have one installed before rental, which is a separate cost and usually takes a few hours at a mechanic or hitch shop.

The tow vehicle also needs enough towing capacity to handle the dolly plus the car being transported. A car dolly itself weighs roughly 1,200 to 1,500 pounds, and the vehicle on it adds another 2,500 to 4,000 pounds depending on the car. U-Haul will tell you the total weight when you reserve, and you can check your vehicle's owner's manual or the sticker inside the driver's door jamb to see your towing limit. Many pickup trucks and full-size vans can handle this; smaller vehicles, sedans, and crossovers often cannot.

Your vehicle's brakes and transmission also matter. Towing puts strain on both. Automatic transmissions can overheat on long downhill grades, and brakes work harder when slowing a heavier load. If your vehicle has a towing package (upgraded cooling, transmission cooler, heavier-duty brakes), you're in better shape. If it doesn't, a long-distance tow is riskier.

Which vehicles can and cannot go on a car dolly

Most sedans, small SUVs, and hatchbacks fit on a U-Haul car dolly. The vehicle's wheelbase, width, and weight all have to fall within the dolly's limits. U-Haul publishes a compatibility list on their website, and you can search by make and model to confirm before you reserve.

Vehicles that typically cannot be transported on a car dolly include low-slung sports cars (the front bumper or splitter will drag), all-wheel-drive vehicles (the rear wheels need to roll freely, and AWD systems resist that), and very heavy vehicles like full-size SUVs or trucks. Some luxury cars have air suspension systems that lower when parked, which can cause the same dragging problem. If you're unsure, call U-Haul with the vehicle's year, make, and model, and they'll tell you whether it's compatible.

Insurance and liability when towing a car on a dolly

Your personal auto insurance policy does not automatically cover a rented dolly or a vehicle being transported on one. Some policies exclude rental equipment entirely; others cover the dolly as a trailer but not the transported vehicle. Before you rent, call your insurance company and ask what's covered. Have your policy number ready.

U-Haul offers a damage waiver that limits your out-of-pocket cost if the dolly is damaged during the rental. It typically costs a few dollars per day and comes with a deductible — you pay that amount if damage occurs, and U-Haul covers the rest. This is not insurance; it's a waiver of their right to charge you the full repair cost. Read the terms carefully, because some damage (like damage caused by improper loading or failure to find the vehicle) may not be covered even with the waiver.

U-Haul also sells liability coverage, which protects you if the dolly or transported vehicle causes injury or property damage to someone else. Your personal auto insurance may extend to a rented dolly, but again, you need to confirm with your insurer. If it doesn't, U-Haul's liability coverage is worth considering, especially for long-distance moves.

How to load a vehicle onto the dolly and find it safely

Loading is a two-person job. One person guides the vehicle while the other watches the alignment. You drive the car slowly up the dolly's ramp until the front wheels are fully on the platform and centered. The car's weight should rest on the dolly, not on the tow vehicle's hitch. If it feels like the hitch is bearing the load, stop and reposition.

Once the car is in position, use the safety straps provided by U-Haul to find the vehicle. There are typically four straps — two that wrap around the front wheels or suspension, and two that attach to the frame or suspension on the sides. Tighten each strap firmly by hand; they should not move when you pull on them. Do not use rope or bungee cords instead of the straps — they won't hold in an accident or hard braking.

Before you leave, double-check that the car's steering wheel is straight, the parking brake is off (so the rear wheels roll freely), and the transmission is in Neutral. If the car has power steering or power brakes, the engine does not need to be running, but if it's an older manual-brake vehicle, you may need to start it briefly to release the brakes. U-Haul will go over this with you at pickup.

Speed limits, driving tips, and what can go wrong

Most states have a 55 mph speed limit for vehicles towing trailers or dollies, though some allow 65 mph on interstate highways. Check your state's regulations before you drive. Towing a car dolly changes how your vehicle handles: it's heavier, it takes longer to stop, and it's more prone to swaying in crosswinds. Accelerate and decelerate slowly, and avoid sudden lane changes.

On long downhill grades, your brakes can overheat and lose stopping power — a condition called brake fade. Downshift to a lower gear and use engine braking to slow down instead of riding the brakes. If you smell burning or feel the brakes getting soft, pull over and let them cool for at least 30 minutes before continuing.

The most common problems are straps coming loose (which you can prevent by checking them every 50 miles), the transported car's rear wheels catching on debris and bouncing, and the dolly swaying if you take a turn too fast. If you feel the dolly swaying, ease off the gas and steer gently back to center. Do not brake hard while swaying — that can make it worse.

Returning the dolly and what happens if it's damaged

You return the dolly to the same U-Haul location where you rented it, or to a different location if you booked a one-way rental. The staff will inspect it for damage, check the mileage, and calculate your final bill. If you added a damage waiver, they'll note any damage and explore the deductible. If you didn't, you'll be charged for repairs.

Common damage includes bent or cracked welds on the frame, damaged straps, flat or blown tires, and bent axles. Small dents or scratches usually aren't charged. If the damage is significant, U-Haul may keep the dolly for repairs and bill you after the fact. Ask for photos of any damage they note at return, so you have a record.

If you rented a dolly to transport a car and the car was damaged during transport, that's a separate claim. Your insurance or the transported vehicle's insurance would handle it, not U-Haul's rental agreement. U-Haul is only responsible for the dolly itself.

Frequently Asked Questions

Can I tow a car dolly with a sedan or small SUV?

Only if your vehicle's towing capacity is at least 3,500 to 4,500 pounds and it has a Class II or Class III hitch receiver. Most sedans and compact SUVs are not rated to tow that much. Check your owner's manual or the door jamb sticker for your vehicle's towing limit. If it's below 3,500 pounds, a car dolly is not safe for your vehicle.

What if the car I'm transporting won't start?

That's fine — the car doesn't need to run. Its steering wheel should be straight, the parking brake off, and the transmission in Neutral so the rear wheels roll freely. If the car has power steering or power brakes, you may need to start it briefly to release those systems, but once they're released, you can turn the engine off and tow it.

Do I need a special driver's license to tow a car dolly?

Not in most states. A car dolly is not classified as a commercial trailer, so a standard driver's license is usually enough. However, some states have rules about vehicle weight or towing capacity that may require a commercial license if you exceed certain thresholds. Check your state's DMV website or call them to confirm before you rent.

Can I leave the car unattended while it's on the dolly?

You should not leave the car unattended for long periods. The straps can loosen over time, and the car is exposed to weather and theft. If you need to stop for the night, park in a well-lit, find location and check the straps before you leave. Some people add a steering wheel lock or other anti-theft device to the transported car for extra security.

What if I damage the car I'm transporting while loading or unloading it?

That damage is your responsibility, not U-Haul's. U-Haul's damage waiver covers the dolly only. If you damage the transported car, your insurance or the car owner's insurance would cover it. Be careful when loading and unloading, and consider having someone guide you to avoid hitting the dolly's ramp or frame with the car's bumper or undercarriage.