2023 Toyota Prius Prime

For 2023 the Prius Prime gets a full redesign (as does the standard Prius), with an eye to not only improving the king of efficient cars but to helping the Prius stay relevant as full EVs become more popular. The new Prius has a stiffer structure for better handling and is slightly larger, longer and lower than the outgoing model. It's also a whole lot more powerful, thanks to a larger internal combustion engine as well as a new battery pack, which Toyota says adds nearly 50% to the Prime's EV-only range.

But the exterior styling will likely get most of the early attention as it replaces the previous Prius' "who did this to you?" design with something exponentially more stylish. It's the same for the inside as well, which gets a cabin with a much more traditional arrangement. Oh, and did we mention it comes with an available solar roof?

Combined output is now 220 horsepower. The electric motor has gotten a gigantic boost in output: It makes 161 horsepower on its own and that's more than the last Prime made total. That power gets you a Toyota quoted 0-60 mph figure of 6.6 seconds for the 2023 Prime. While that's not exactly blazing by modern standards, it might as well be light speed for a car that previously couldn't hit 60 in under 9 seconds unless you pushed it out of a plane.

Toyota says the Prime will get up to 52 mpg in combined city/highway driving for the SE trim, or 48 mpg combined for the XSE and XSE Premium trims. That means the Prime gets about 5 mpg less than the regular Prius but is still an outstanding fuel-sipper, especially once you factor in its all-electric range. It's also better than what could be considered the Prime's closest competitor, the Kia Niro Plug-in Hybrid (48 mpg and 33 miles of range).

Charging the Prius Prime's battery pack from zero to 100% will take about four hours when using a 240-volt power source, Toyota says.

Similarly impressive is how much the Prime relies on electric power. When it's in EV mode, it feels a lot like driving a purely electric vehicle. Acceleration is brisk, and you can get on the highway or pass someone without even a hint of the gas motor. Bumping the electric motor's power up so much was absolutely the right call and it makes the Prius Prime feel better all around.

The back seat is less comfortable. The low cut of the roof for styling purposes has made getting in and out more difficult for taller passengers. That same shape has also cut into rear headroom, so if you're more than 6 feet tall you should make a pitch for one of the front seats whenever possible.

The rest of the dashboard has received a similarly more traditional layout and features a climate control with physical buttons and relocates the gear selector to the center console, although it still features the Prius' unique shift pattern. Thanks to the Prius Prime's low hood and expansive windshield and side windows, visibility is excellent to the front and sides. Rear visibility, however, is not so ideal. The split liftgate has been removed, leaving less of a window to see through via the rearview mirror. A digital camera display in the rearview mirror is thankfully available as an option.

An 8-inch multimedia touchscreen is standard and a larger 12.3-inch screen is available. For comparison, the previous generation's screen options were slightly smaller, at 7 inches and 11.6 inches. Synthetic leather upholstery (Toyota calls it SofTex) is available, as are heated and ventilated seats, a wireless phone charger, a digital key, a JBL audio system and a fixed-glass panoramic sunroof.

Traffic Jam Assist is another standard feature on the Prime and combines adaptive cruise control and lane keeping assistance to provide a low-speed hands-free driving experience in, you guessed it, traffic jams. This is the first Toyota to use this system, which debuted previously in Lexus vehicles. The system has quite a few specific operating conditions — among them, it only activates under 25 mph and uses a camera to monitor the eyes of the driver, making sure they're on the road ahead and not buried in James Joyce's Ulysses, or whatever people seem to read when they're mired in rush-hour traffic.

It works well in those conditions, centering the car well in its lane. If another car merges sharply in front of you, it will ask you to take control of the steering again so keep your hands ready. There is one major annoyance: The sensor to watch your eyes is mounted atop the steering column, so if you like to drive with a hand on top of the wheel the car constantly alerts you to sit up since it can't see your face.

Another trick piece of tech is the available solar roof. It allows for onboard charging of the Prime's battery when parked and can deliver power to other accessories, like the phone charging and air conditioning, when the Prime is driving around. The only trade-off is the loss of the dual-pane glass roof when you select this option.