2020 Hyundai Elantra: What to check before buying

Oil burning is the core pattern, often starting between 20,000 and 27,000 miles with no visible leak. Ticking or knocking follows, then loss of power, limp mode, stalling, or outright seizure with metal in the oil pan. Some engines fail with no oil or check engine light. Two reports involve fire and one describes sudden acceleration into a tree. Many complaints cite engine recall 21V301 but describe dealers refusing coverage over claimed abuse, a branded title, an Alabama build, or a long wait for parts.

The transmission suddenly stops delivering power. Engine speed climbs while the car crawls at 10 to 20 mph, sticks in one gear, or will not shift out of first. Other reports describe jerking, slipping, a forward lunge at highway speed, and metal shavings in the fluid. Many failures arrive very early, from about 2,200 to 8,000 miles, and some cars go through more than one replacement. Drivers describe near rear-end collisions while merging or pulling into traffic. Dealers sometimes perform only the software portion of recall 22-01-030H and decline the transmission replacement.

High beams stop working, usually because a shutter inside the headlamp housing sticks. Some cars lose both low and high beams at once, and owners mention melted sockets and wiring. Daytime running lights also fail repeatedly. Replacement assemblies sometimes fail the same way. A full housing replacement is the fix, and owners call it expensive. Many reports cite bulletin 20-BE-004H or Service Campaign T5G, then describe dealers saying the VIN is not covered. Parts shortages also leave some cars waiting for repair.

The most common symptom is a grinding, rubbing, or whirring noise from the steering column, mostly at low speed. Shops trace it to the worm shaft, and owners report the repair is not covered for every VIN. More serious reports describe the car pulling sharply left or right, the wheel not turning in a corner, or assist abruptly switching between stiff and loose at 40 to 70 mph. Lane keeping assist is also said to jerk the wheel back and forth. These reports include five crashes, one fire, and two injuries.

High beams that flicker or strobe instead of staying on are the most repeated problem, and some owners say the VIN shows no open recall. One report describes a fire in the passenger headlight assembly while parked. Other complaints cover backup cameras that go blank or flicker, repeated headlight bulb failures, and no-start problems traced to the starter or a loose starter cable. A few describe random stalling with rising engine speed. Separate reports cover forward collision and lane camera failure, and theft.

Phantom braking is the clearest pattern. The car brakes hard with nothing ahead, and following drivers nearly hit it. Other reports describe a brake pedal that becomes very hard to push, grinding when stopping around 26,000 miles, and wheels locking during light braking in rain, which led to a skid into a curb. One complaint says the forward collision system gave no warning before a crash. Three crashes and two injuries appear in these reports. Dealers often cannot find a fault.

False activations are the main complaint. The system brakes or cuts throttle with no hazard present. Low morning sun is one reported trigger at highway speeds. Cutting the throttle can leave the car stalled mid-turn in an intersection or a parking lot entrance. One report describes the opposite problem, no warning before hitting an object in the road, which ended in a crash. Dealers tend to say the system is working as designed or is simply very sensitive.

Failure to deploy in serious crashes is the pattern. One report describes a driver-side T-bone collision where no bag fired, and another a frontal impact with a tree where neither front bag deployed. A third describes a driver bag that only partly inflated while heavy dark smoke poured from the steering column. All three complaints involve crashes, with four people injured, including concussions and a forearm fracture. The count is small, but each report pairs a crash with injuries.