Review: 2027 Mercedes-Benz CLA 350 Electric Targets the Tesla Model 3 With a Long Driving Range and Good Driving Dynamics

This new CLA is a showcase for the brand’s electrification technology and a preview of future electric and hybrid Mercedes models. In addition, it hews closer to Mercedes’ recent “traditional” styling than the bulbous design language of the earlier EQ-series EVs.

To help make public charging more convenient, the CLA includes both a North American Charging Standard (NACS) port for fast charging at Tesla Superchargers and a J1772 Level 2 port. Unfortunately for owners who may be replacing a Tesla Model 3 with the CLA Electric, the Tesla home chargers won’t work with the NACS port. Instead, they will have to use an adapter and connect their home Tesla charger to the CLA via the J1772 Level 2 port. 

We can’t help but wonder whether the CLA will disappoint owners with its overall design and confusing controls. It certainly did for us. Although the new CLA is longer, wider, and taller than the previous generation, even Mercedes’ own measurements show that the back seat somehow has less elbow, shoulder, and legroom than its predecessor. The driving position certainly doesn’t feel roomy, either. Consumer Reports testers of all sizes said the space was narrow and cramped. While the new infotainment system looks slick, nearly every function—such as those for climate controls, tuning, and lumbar adjustment—is accessed through the screen. Even the few physical controls are compromised. The driver-side window controls are two switches and a button to toggle when you want those switches to operate the rear windows. Maddening.

It’s not all awful, however. The powertrain is impressive, delivering both quick acceleration and, at least according to the onboard computer, a long driving range. Testers liked the balance between ride comfort and sporty handling. Coupled with the supportive front seats and quiet interior, the CLA Electric seems as if it would be a really good EV highway cruiser.

One of our testers asked, “How can the car be so good to drive and so terrible to use?” And it’s true, the CLA Electric really is a great car to drive. The vehicle uses two electric motors, one at each axle. The rear motor is always in use, while the front motor is activated when the system detects rear wheel slip and the car needs more power. Total combined output is 260 kilowatts, with 380 lb.-ft. of torque and up to 349 hp available.

Power delivery is smooth and well managed, with an urgency that doesn’t approach the neck-snapping, out-of-control feel of some EVs. Mercedes says the version we borrowed can run from 0 to 60 mph in 4.8 seconds and has an EPA-rated driving range of 312 miles. But a number of testers said the car estimated 340 to 373 miles of range, which would be very impressive if true.

There are two regenerative braking modes, plus a coasting/no-regen mode. The normal mode feels like driving a gas-powered vehicle, with just a bit of force slowing it, while the strong regen mode is for one-pedal driving. Given the strength of the deceleration force, those new to the feature will need some time to become acclimated to the throttle pedal’s sensitivity. A few testers found that the car seemed to gain speed when in coasting mode, and required them to repeatedly brake to avoid going too fast. It would be better if there were a few extra levels between the strong and normal modes, as Hyundai and Kia handle regenerative braking. Mercedes has an “intelligent” recuperation mode, which lets the car adjust regen force based on map data, cruise control, and other factors.

The CLA Electric is the first Mercedes-Benz EV capable of 800-volt DC fast charging and can charge at up to 320 kW when available. At 400-volt fast chargers, the car can charge at up to 100 kW. The built-in NACS port allows owners to use Tesla superchargers, and they can charge the CLA at CCS (Combined Charging System) chargers using an adapter. But the NACS port is only for DC fast charging, so people with 240-volt Tesla home chargers will need to use an adapter for the J1772 Level 2 port.

We found that the CLA 350 Electric handles well, despite being relatively heavy for its size (4,530 pounds). The steering feels natural and light at first, building up some heft as the driver turns the wheel through a corner. That makes it easy to drive in slow-speed situations like parking lots without feeling darty when speeds increase on the highway. 

The ride is firm but comfortable and composed over most surfaces. Bigger bumps and impacts are soaked up by the suspension without any harshness. The car feels a little choppy over repeated bumps, but that doesn’t translate into any head toss or floaty feeling. Overall, the ride is more supple than most German sedans, and Mercedes did a very good job balancing ride comfort and handling.

Noise isolation is a mixed bag. The motors have an odd whirring sound that’s always present, and road and wind noise are elevated at highway speeds. Most testers found the digital “engine” sounds so artificial and annoying that they immediately turned them off. At lower speeds, however, the CLA is quieter, with less tire and wind noise. 

The CLA feels downright small for a compact luxury car. It’s about an inch taller, wider, and longer than the previous-generation CLA, with a 3-inch-longer wheelbase, but it’s very difficult to find that extra space once inside. The driving position is incredibly tight. Testers said the door controls ate up space for their left knee, and the wide center console cut into space for their right leg. Making matters worse, the center console isn’t padded, so it’s cramped AND uncomfortable. 

A number of drivers couldn’t lower the seat enough to get comfortable, even those who like a more elevated seating position. That feeling is exacerbated by the severe rake of the windshield and roof pillars, as well as the pronounced curvature of the roofline. Finally, the left footrest, or dead pedal, isn’t symmetrical with the brake and accelerator pedals. That means the driver sits with their right leg raised off the seat, further compromising comfort.

The front seats are comfortable and supportive, particularly the seatback. There are firm bolsters on the bottom cushion that get higher toward the rear. The result is that the seats are easy enough to slide into, but they still hold the driver and front passenger in place. Opinions were mixed on the level of built-in lumbar support, but there’s a wide range of adjustability. But making those adjustments is an exercise in frustration. 

The rear seat is quite snug, and the seat bottom is very low to the floor, forcing passengers to sit with their knees up in the air and having little underleg support. The door and fold-down center armrest are well-positioned but thinly padded. 

Interior fit and finish is good for a $50,000 subcompact luxury sedan—but our vehicle was optioned up to $67,000. At that price, the interior is fine but not stellar. The wood trim and turbinelike air vents are attractive (though some testers said both are a bit garish), and there’s abundant exposed stitching and padded surfaces up front. The glove box, air vents, and center console bin operate with a damped action. But the plastic bits feel out of place, particularly the steering wheel buttons and the touch-sensitive panel below the center screen.

Our testers liked the storage bin under the center console and how easy it was to reach the wireless phone charging pad. But the cup holders don’t hold taller water bottles very well, and it’s hard to reach into the door pockets because the window and mirror controls restrict access when the door is closed. 

Nearly every function is handled through the 14-inch center touchscreen, with the remaining controls using touch-sensitive “buttons” or surfaces. Even the window switches, which are one of the few physical controls, are compromised. Mercedes uses just two switches on the driver’s side for the front and rear windows, with a toggle button to choose between front and rear. Let that sink in: The designers replaced four mechanical switches with three, saving the company money and adding to driver frustration. We’ve tested Volvos and Volkswagens with similar setups, and all are less convenient than the standard four-switch array.

Even adjusting the front-seat lumbar support requires the center screen. You drag your finger to adjust the bolster’s height and depth, a difficult and distracting process to do while driving. Choosing seat memory or turning the seat heat on or off is also done via the screen. Even changing the opacity of the glass roof requires diving into the center screen, rather than just having a button—or even a touch-sensitive surface!—located up on the headliner.

The head-up display has an overly large speed limit icon, yet a small text size for the set cruise-control speed. It’s also just a duplicate of what’s already at the top of the driver’s gauge/instrument screen. 

The only climate functions that are always accessible are the temperature and maximum defrost. Everything else, such as fan speed or airflow mode, is on a sublevel screen that’s accessed by pressing a teeny-tiny climate icon.

It seems that Mercedes-Benz heard Consumer Reports’ past complaints about its steering wheels. Now there’s a roller wheel to adjust volume rather than a touch-sensitive slider. Yet Mercedes-Benz still doesn’t offer the ability to skip tracks via a steering-wheel control.

Even though the paddles behind the steering wheel can be used to adjust the regen level, it’s also possible to do so using the right-side stalk on the steering wheel, which doubles as the CLA’s gear selector. 

Much of the left side of the center touchscreen is blocked by the steering wheel rim, even though the screen is incredibly large and much of the real estate is unused. 

Not everything failing is limited to the interior: The button to release the electric charger plug from the port is hidden in such a way that it’s hard for a first-time user to find. Will an owner become familiar with its location? Of course. Could it be better designed in the first place? Definitely. But that goes for much of the CLA’s controls.

The CLA gets eight cameras, five radar sensors, and 12 ultrasonic sensors that power all the usual active safety features. It also comes standard with adaptive cruise control. Buyers can opt for lane centering assistance, automatic lane changing, surround view cameras, and parking assistance. We will evaluate these features in our extensive tests of advanced driver assistance systems.

The CLA comes with a standard audiovisual end-of-trip reminder to check the back seat for rear passengers, but the system lacks occupant sensing.

Perhaps the most interesting feature is the ability to remotely update active safety and driving assistance software, much like Tesla sends software updates for its Autopilot system. That way, tomorrow’s drivers aren’t stuck with software that’s state-of-the-art today. But we would be surprised if these updates are free.