Top 10 Least Reliable 2026 Models According to Consumer Reports

Published on December 5, 2025 in Top 10 by The Car Guide

Have you seen the latest rankings of the best auto brands and models for predicted reliability according to U.S. magazine Consumer Reports? Toyota, Subaru and Lexus make up the top 3. In fact, seven of the 10 most reliable brands are either Japanese or Korean. But what about the least reliable?

Before we go any further, you should know that these rankings are based on data collected on more than 380,000 vehicles as reported by their owners, covering the 2000-2025 model years as well as some early 2026 models. Twenty potential trouble areas are considered (engine, transmission, EV battery, charging, body hardware, paint and trim, etc.), and then a predicted reliability score is awarded on a 100-point scale.

In the latest report, fully electric vehicles continue to prove a bit more reliable than plug-in hybrids, but less reliable than conventional hybrids and ICE-powered vehicles. Cars—a category that includes sedans, hatchbacks and wagons—remain the most reliable vehicle type, followed by minivans and SUVs. Pickups rank last.

Brands With the Lowest Predicted Reliability for 2026

Many of the lowest-ranked brands based on predicted reliability for 2026 come from the U.S. including Chrysler, GMC, Ram and Jeep. Rivian ranks at the very bottom once again. And while Tesla is the most improved brand, rising from 17th to 9th place, Mazda has dropped the most, going from 6th to 14th place:

However, a big asterisk must be added here, as Consumer Reports either has insufficient data or the manufacturer has too few models for them to rank Alfa Romeo, Dodge, Fiat, Infiniti, Jaguar, Land Rover, Lucid, Maserati, MINI, Mitsubishi, Polestar and Porsche. Historically, most of these brands have ranked below average or near the bottom, with Porsche being one of the exceptions.

Models With the Lowest Predicted Reliability for 2026

You can take the rankings with a grain of salt if you want. Now, check out the top 10 least reliable 2026 models according to Consumer Reports:

10. Chrysler Pacifica Hybrid

Consumer Reports’ reliability score: 26

Trouble spots: Transmission; engine; in-car electronics (including the screen freezing and going blank); electrical accessories; EV charging and EV battery (including battery cooling issues).

9. Honda Prologue

Consumer Reports’ reliability score: 25

Trouble spots: EV battery; EV charging; climate system; drive system; body hardware; electrical accessories; in-car electronics (including the screen freezing and going blank); noises/leaks (including the weather stripping and trim rattles).

8. Kia EV6

Consumer Reports’ reliability score: 25

Trouble spots: EV battery; electric motors; EV charging (including issues with the integrated charging control unit); climate system; electrical accessories; brakes; body hardware.

7. Kia EV9

Consumer Reports’ reliability score: 24

Trouble spots: EV battery (including cells in the battery pack that required replacement); EV charging; body hardware; electrical accessories; in-car electronics (including the screen freezing and going blank).

6. Mazda CX-90

Consumer Reports’ reliability score: 23

Trouble spots: Engine (including premature timing chain failure); transmission (including slipping transmission and torque converter issues); steering; brakes; electrical accessories (including the keyless entry not working); in-car electronics (including the screen freezing and going blank); noises/leaks.

5. Genesis GV60

Consumer Reports’ reliability score: 21

Trouble spots: EV battery (including full battery pack replacements and cooling problems); EV charging (including issues with the integrated charging control unit); drive system; climate system; brakes; electrical accessories; body hardware; in-car electronics (including full infotainment system replacement); noises/leaks; paint/trim (including trim pieces around the windshield coming off).

4. Mazda CX-90 PHEV

Consumer Reports’ reliability score: 20

Trouble spots: EV battery (including malfunctions and cooling issues); electric motors; transmission; drive system; fuel system; climate system; steering and suspension; brakes; electrical accessories; body hardware; in-car electronics; noises/leaks; paint/trim.

3. Chevrolet Blazer EV

Consumer Reports’ reliability score: 19

Trouble spots: EV battery (including malfunctions and cooling issues); climate system (including problems with the electric heating system and AC compressor); electrical accessories (including 12-volt battery failure); in-car electronics (including display screens freezing and going blank); noises/leaks.

2. Rivian R1T

Consumer Reports’ reliability score: 18

Trouble spots: EV battery (including replacement); electric motors (including a failure that required motor replacement); climate system; steering and suspension; electrical accessories; body hardware (including faulty electric door handle motors and tailgate latches not closing properly); noises/leaks; paint/trim (including loose fender liner trim pieces).

1. GMC Acadia

Consumer Reports’ reliability score: 14

Trouble spots: Transmission (including leaking transmission fluid and sometimes a full replacement); brakes; electrical accessories; in-car electronics.