U-Haul 6x12 enclosed cargo trailer

6x12 Cargo Trailer Rental in Upland

Rent the largest enclosed U-Haul trailer, the 6x12, in Upland. Check your tow rating, pack it to tow straight, and get a free hookup check at pickup.

Updated 3 min readBy the Route 66 Auto Repair service team

TLDRThe 6x12 cargo trailer is our biggest enclosed size. It asks the most of your tow vehicle, so check the rating first and confirm current capacity on uhaul.com.

On this page

The 6x12 is the largest enclosed U-Haul trailer you can pick up at Route 66 Auto Repair in Upland. It suits a 1 to 2 bedroom load behind a pickup or full-size SUV that is rated for it. You book it on uhaul.com, and our technicians check your hitch, ball, chains and lights for free before the trailer leaves our lot in Upland. Heavy trailers reward preparation, so start with your vehicle.

Is your vehicle up to a 6x12?

A bigger trailer means more weight behind you and more work for every system on your truck or SUV. Look for these before you reserve.

  • A towing rating in the owner's manual that covers a loaded trailer of this size
  • A receiver hitch whose class and label meet U-Haul requirements
  • Working light wiring at the rear plug
  • Tires with even wear, set to the pressure on the door placard
  • A cooling system that holds steady on the 210 in summer

6x12 trailer or a moving truck?

The 6x12 wins when your truck or SUV is rated for it and you want to arrive with your own vehicle and everything else in one trip. It loses when the tow vehicle is borderline, when the route climbs the Cajon Pass in August, or when nobody in the family has pulled a long trailer before.

A mid-size or large truck carries a similar household without the hitch question. Compare sizes on the moving trucks and vans page before you decide. Smaller households may fit the 5x8 cargo trailer instead.

How do you pack a long box so it tows straight?

Think in thirds. The front third takes the heaviest furniture and appliances. The middle takes dense boxes and the mattress set standing on edge. The back third takes light, bulky things like chairs and bedding. Leave room for a strap every few feet and cinch each tier to the rails. A long load that slides backward on the first hard stop changes the tongue weight in a second.

Our 6x12 trailer pickup process

  1. Step 1: Confirm the pairing

    We check that the reservation lists your tow vehicle and that the paperwork matches the trailer.

  2. Step 2: Walk the trailer

    Doors, latches, tires and existing marks are noted and photographed.

  3. Step 3: Hook up

    Ball and coupler are matched, the latch closed, the pin installed and the chains crossed under the tongue.

  4. Step 4: Test lights

    Brake, turn and running lights are checked with a second set of eyes.

  5. Step 5: Review the stance

    We look at tongue weight and the hitch rating, then you take a slow lap of the lot before you pull out.

What's included with a 6x12 cargo trailer

Included on the work order

6 lines
  1. 01Reservation and license check
  2. 02Door and latch walk-around
  3. 03Cargo-area cleanliness photo
  4. 04Free hookup check at the coupler and chains
  5. 05Trailer light test
  6. 06Hitch rating comparison with U-Haul requirements

Tow vehicle: need-now or need-later?

Need now: call

Safety or strand risk
  • Rear lights or wiring that fail at the plug
  • Coolant temperature that climbs on grades
  • Brake pulsation or grinding under load

Need later: book

Can be scheduled
  • An aging battery that still tests fine
  • Wiper blades that streak in the dry season
  • A scheduled fluid service that is close but not past due

How pricing and timing work

U-Haul sets the 6x12 rental rate and shows it on the U-Haul dealer page (opens in a new tab) when you book. Weekends and month-end fill first, so reserve early, and plan a little extra time at pickup for a larger trailer. If you want a transmission condition inspection or another paid check before a long tow, the fee is stated at the counter first, and any repair gets a written estimate.

Before and after the long drive

Stop after the first few miles and walk around: latch, pin, chains, plug. Repeat at every fuel stop. On a one-way move, the drop-off location is set in your reservation, and the one-way rentals page covers the details. If the tow vehicle ran hot or smelled of burning fluid on the way, have it checked before your next trip.

Row of U-Haul moving trucks parked on the lot in Upland
U-Haul trucks on our Foothill Blvd lot
Shop team member standing in front of a row of U-Haul trucks
Our U-Haul lot on Foothill Blvd

Frequently asked questions

What kind of vehicle can pull a 6x12 cargo trailer?

Usually a pickup or larger SUV with a matching hitch and a towing rating that covers the loaded trailer. Enter your vehicle on uhaul.com when you reserve so the pairing is checked, and we compare the hitch rating at pickup.

Will a two-bedroom apartment fit in a 6x12?

Some do, especially with compact furniture and well-packed boxes. Large sectionals and full dining sets change the math. Confirm current capacity on uhaul.com, and consider a truck if your list keeps growing.

Is a 6x12 cargo trailer hard to back up?

A longer trailer responds more slowly than a short one, which many drivers find easier to control. Practice in an empty lot, use a spotter, and plan your parking so you can pull forward whenever possible.

Get the estimate in writing. Then decide.

Call (909) 608-7699 or stop by 1775 W Foothill Blvd, Upland, CA 91786. Monday to Friday 8 AM–5 PM, Saturday 8 AM–2 PM, Sunday closed. We test first, write the estimate, and label what is needed now and what can wait.

Bring your key, your AAA card if you have one, and a photo of any warning light.

Call (909) 608-7699Contact Us