Compare the2025 Audi Q4 e-tron SportbackVS 2025 GMC Hummer EV SUV

The Q4 e-tron Sportback’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Hummer EV SUV doesn’t offer pre-crash pretensioners.

The Q4 e-tron Sportback has standard front and rear seat side-impact airbags and head airbags, which act as a forgiving barrier between the passengers and the door. Combined with high-strength steel door beams this system increases protection from broadside collisions. The Hummer EV SUV doesn't offer rear-seat side-impact airbags, only ones for front seat occupants.

The Q4 e-tron Sportback has a standard Secondary Collision Brake Assist, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Hummer EV SUV doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

Both the Q4 e-tron Sportback and Hummer EV SUV have rear cross-traffic warning, but the Q4 e-tron Sportback has Automatic Brake Activation (automatically applies the brakes) to better prevent a collision when backing near traffic. The Hummer EV SUV’s Rear Cross Traffic Alert doesn’t automatically brake.

Both the Q4 e-tron Sportback and the Hummer EV SUV have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and available around view monitors.

The Audi Q4 e-tron Sportback achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2024 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated side impact crash test, headlight evaluations, and pedestrian crash prevention testing. The Hummer EV SUV has not yet been evaluated by the IIHS for 2024.

The Q4 e-tron Sportback comes with a full 4-year/50,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The Hummer EV SUV’s 3-year/36,000-mile basic warranty expires 1 year or 14,000 miles sooner.

The Q4 e-tron Sportback’s corrosion warranty is 6 years and unlimited miles longer than the Hummer EV SUV’s (12/unlimited vs. 6/100,000).

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Audi vehicles are more reliable than GMC vehicles. Consumer Reports ranks Audi 5 places higher in reliability than GMC.

On the EPA test cycle the Q4 e-tron Sportback gets better mileage than the Hummer EV SUV:

The Q4 e-tron Sportback has a standard locking charge port which locks and unlocks with the power locks. The Hummer EV SUV doesn’t have a locking charge port. A locking charge port prevents tampering and damage.

For better stopping power the Q4 e-tron Sportback’s front brake rotors are larger than those on the Hummer EV SUV:

The Q4 e-tron Sportback stops much shorter than the Hummer EV SUV:

The Q4 e-tron Sportback’s standard 235/50R20 front and 255/45R20 rear tires provide better handling because they have a lower 50 series front and 45 series rear profile (height to width ratio) that provides a stiffer sidewall than the Hummer EV SUV’s 70 series tires. The Q4 e-tron Sportback’s optional 235/45R21 front and 255/40R21 rear tires have a lower 45 series front and 40 series rear profile than the Hummer EV SUV’s 55 series tires.

For better ride, handling and brake cooling the Q4 e-tron Sportback has standard 20-inch wheels. Smaller 18-inch wheels are standard on the Hummer EV SUV.

The Q4 e-tron Sportback handles at .83 G’s, while the Hummer EV SUV pulls only .76 G’s of cornering force in a Car and Driver skidpad test.

The Q4 e-tron Sportback executes Motor Trend’s “Figure Eight” maneuver 1.9 seconds quicker than the Hummer EV SUV 3X (26.3 seconds @ .68 average G’s vs. 28.2 seconds @ .64 average G’s).

The Audi Q4 e-tron Sportback may be more efficient, handle and accelerate better because it weighs about 4050 to 4250 pounds less than the GMC Hummer EV SUV.

The Q4 e-tron Sportback is 2 feet, 2 inches shorter than the Hummer EV SUV, making the Q4 e-tron Sportback easier to handle, maneuver and park in tight spaces.

The Q4 e-tron Sportback is 1 foot, 1.1 inches narrower than the Hummer EV SUV, making the Q4 e-tron Sportback easier to handle and maneuver in traffic.

The Q4 e-tron Sportback is 14.3 inches shorter in height than the Hummer EV SUV, making the Q4 e-tron Sportback much easier to wash and garage and drive (lower center of gravity).

The Q4 e-tron Sportback’s liftgate lifts up in one piece, completely out of the way of loading and unloading, while sheltering the cargo loading area. The Hummer EV SUV’s swing out door blocks loading from the passenger’s side.

To make loading groceries and cargo easier when your hands are full, the Q4 e-tron Sportback’s available liftgate can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The Hummer EV SUV doesn’t offer a hands-free gesture to open its cargo door, forcing you to put cargo down if your hands are full.

A maintenance reminder system is standard on the Q4 e-tron Sportback to save the owner time and money by calculating maintenance intervals for vehicle inspections, vehicle inspection based on odometer mileage. This takes the guesswork out of keeping your vehicle in top condition and helps it last longer. GMC doesn’t offer a maintenance reminder on the Hummer EV SUV.

The Q4 e-tron Sportback Prestige has a standard heads-up display that projects speed and driver assistance information readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Hummer EV SUV doesn’t offer a heads-up display.

The Q4 e-tron Sportback’s front and rear power windows all open or close with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The Hummer EV SUV’s power windows’ switches have to be held the entire time to close them fully.

If the windows are left open on the Q4 e-tron Sportback the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Hummer EV SUV can only close the windows from inside the vehicle, with the ignition on.

To improve rear visibility by keeping the rear window clear, the Q4 e-tron Sportback has a standard rear wiper. The Hummer EV SUV doesn’t offer a rear wiper.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The Q4 e-tron Sportback Prestige has standard headlight washers to keep headlight output high. The Hummer EV SUV doesn’t offer headlight washers.

Consumer Reports® recommends the Audi Q4 e-tron Sportback, based on reliability, safety and performance.