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moderate 122 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Of the 122 electrical complaints filed for the 2018 Chevrolet Malibu, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 mi.
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
Owners have filed 122 electrical complaints against 1 active recall — roughly 122 complaints per campaign.
No new NHTSA electrical complaint has been filed on this vehicle in over 5 years — the issue may be aging out of the active population.
Disabled fuel injectors would prevent the engine from starting and may cause a stall, increasing the risk of a crash.
Buyer takeaway: 2018 Chevy Malibu owners report chronic electrical and powertrain defects: persistent "engine power reduced" warnings that cause dangerous speed loss on freeways, difficulty getting the transmission to register Park, and complete loss of electrical power while driving. Many problems persist despite dealer repairs and manufacturer recalls; some owners have taken their cars to dealers five or more times for the same issue with no resolution.
The 2018 Chevy Malibu shows a pattern of recurring electrical and engine management problems that dealers struggle to fix and sometimes refuse to acknowledge. Most common is the "engine power reduced" warning, which forces the car into limp mode at 25–35 mph even on the freeway at 70 mph. Owners say this happens repeatedly—sometimes after the dealer performed a recall repair for it, sometimes years later with no warning. Several owners reported the check engine light comes on and off unpredictably, and when dealers investigate, they either say there's no fix or claim they already repaired it.
A second major issue is the transmission not registering Park. Owners say the dash shows "Shift to Park" even though the car is already in Park, forcing them to cycle the shifter multiple times. The radio and electrical components stay on and won't turn off. One dealer flat-out said 2017–2019 Malibus are known for this defect and charged $400–$900 to fix it.
Power loss during auto start/stop is another serious complaint. The engine shuts off at a red light, then won't respond to the accelerator. Some owners also report the battery testing good but the car still won't start, or dying in traffic and requiring a jump-start repeatedly. One owner replaced the battery multiple times with no luck.
Less frequent but documented: rear camera electrical shorts, radio turning on by itself, Bluetooth failing, power window glitches, and remote start not working. One car caught fire after hitting roadway debris. Owners consistently report that dealer fixes are temporary—the problem returns within days to months—and that GM either offers credit toward a new car or avoids helping altogether.
Same Chevrolet Malibu electrical reports on nearby years: 2015 · 2016 · 2017 · 2019 · 2020
Chronic illumination of check engine light and recurrent 'engine power reduced' messages. The issue reappears repeatedly despite multiple dealer visits and repair attempts. Owners report limp-mode operation limiting speed to 25–35 mph, inability to accelerate, rough shifting, and jerking. Some dealers acknowledge the problem but claim no known fix exists.
When: Occurring from days after purchase through years of ownership; mileage ranges from ~7,500 to over 100,000 miles
Symptoms owners cite: Check engine light illuminates persistently or intermittently; Dashboard message 'engine power reduced' or 'reduced power mode'; Vehicle enters limp mode, limited to 25–35 mph even on highway at 70 mph; Loss of power and inability to accelerate; Hesitation and jerking during acceleration; Multiple restart cycles required to clear the fault temporarily; RPM buildup without vehicle moving forward; struggle to shift into gear
Codes mentioned: U01B0 (Battery Sensor Module), P0300, P050D, U0100, U0101, U0415, U0073
Repairs/costs cited: Dealers cite ECM replacement, ECM software update, oxygen sensor service, fuel injector service, fuel pump sensor replacement, and throttle debris cleaning. Costs range from $400 to $1,900. Repairs are often temporary; the issue recurs within days to months.
Recalls/TSBs owners mention: Recall N192221960 issued (ECM software update); NHTSA Campaign 19V642000 (electrical/fuel/engine); Campaign 19V642000. GM offered $2,500 credit toward new car purchase in some cases. Some owners report GM letters claiming coverage for 'engine power reduced' at no charge, then refusal to honor it. Dealerships claim ECM was already updated or deny recall applicability.
Transmission does not register as being in Park even when shifted into Park. Dashboard displays 'Shift to Park' message continuously. Electrical components (radio, dashboard) remain powered on and will not shut down. Owners forced to repeatedly cycle the shifter to achieve recognition. Gear selector switch has a faulty metal bar / blue button mechanism that fails to signal Park position to the computer.
When: Throughout ownership; reported as early as weeks after purchase and continuing at various mileages
Symptoms owners cite: Dashboard message 'Shift to Park' persists after shifting into Park; Radio and dashboard lights do not turn off; Electrical components remain powered when engine is off; Requires multiple shift cycles (drive → park → drive → park) to register Park; Delay or resistance when shifting between gears; Shift lever feels unresponsive or delayed
Repairs/costs cited: Dealer diagnosis identifies faulty wiring in electrical system or gear selector switch malfunction. Repair cost cited as $400–$900 for shifter replacement. Dealers acknowledge 2017, 2018, and 2019 models are known for this defect.
Engine auto start/stop system engages unexpectedly or fails during driving transitions. When the system shuts off the engine at a stop, the electrical system becomes inoperable, and the vehicle will not respond to accelerator input. Loss of power steering control simultaneously. Stabilitrak and electronic stability control warnings illuminate.
When: While coming to complete stop or during low-speed city driving
Symptoms owners cite: Engine shuts off unexpectedly during auto start/stop function; Electrical system becomes unresponsive after engine shutdown; Vehicle fails to accelerate when foot pressed on pedal; Vehicle does not stop as intended; rolls to a stop without braking assistance; Power steering is lost; steering wheel becomes hard to turn or locked; Stabilitrak warning light illuminates; Electronic stability control warning illuminates; Message displayed: 'open and close the windows'
Repairs/costs cited: AutoZone diagnostics identified debris in the throttle; high-speed highway driving recommended but did not resolve the issue. No dealer repair performed in the documented case.
Recalls/TSBs owners mention: Manufacturer referred complainant to NHTSA Hotline; no repair accomplished.
Vehicle experiences intermittent failure to start, loss of all electrical power while driving, and complete power-down episodes. Owners report the vehicle shuts off in traffic and requires jump-starts to restart. Battery replaced multiple times but does not resolve the problem. Fuel gauge reading becomes inaccurate, showing empty tank when fuel is present.
When: Intermittently from days after purchase through multi-year ownership
Symptoms owners cite: Vehicle fails to start despite functioning battery; Complete loss of electrical power mid-drive; Vehicle stalls at traffic lights or while stationary; Requires jump-start to restart; Gas gauge registers past empty when fuel is present (false low-fuel warning); Lights, radio, and dashboard come on but engine does not crank; Repeated stalling and power loss episodes separated by days or months
Repairs/costs cited: Battery replacement performed multiple times; testing shows battery is in good condition (100% charge). Dealerships unable to diagnose root cause over extended shop stays. Cost for new battery and electrical diagnostics not fully disclosed in narratives.
Recalls/TSBs owners mention: Dealerships informed owners that multiple 2018 Malibu recalls exist but offered no specific remedy. GM Financial and Cox Chevrolet gave 'runaround' without mention of recalls.
Power windows intermittently stop responding to button input during window position adjustment. Driver must activate windows on other doors to regain control of the stuck window. Issue occurs in all four windows.
When: Intermittently during normal window operation
Symptoms owners cite: Window stops responding to button press mid-adjustment; Driver unable to adjust window to desired height; Requires pressing buttons on adjacent windows to regain control of stuck window; All four windows exhibit the same fault pattern
Recalls/TSBs owners mention: Dealership recognized a 'power issue' but did not repair it.
Radio turns on unexpectedly when the car is off or has been off for extended periods. Bluetooth connectivity fails—music and phone calls do not play through speakers. Volume adjusts itself without user input. Dealership diagnostics cannot identify the fault.
When: Intermittently; occurs after car has been off, and during automatic remote start
Symptoms owners cite: Radio plays when vehicle is off or has been idle; Bluetooth disconnects; music and calls fail to route to speakers; Volume turns up and down without user input; Dealership cannot reproduce or diagnose the issue
Recalls/TSBs owners mention: Dealership stated they could not find anything wrong.
Rear backup camera connection becomes loose or fails intermittently, causing the camera feed to drop out. The problem is described as a simple electrical short or loose wiring, but requires dealership evaluation for full electrical system replacement according to Chevy service.
When: Intermittently during vehicle use; vehicle has only ~25,000 miles and is seldomly driven
Symptoms owners cite: Rear camera feed does not register or display; Camera connectivity is intermittent; Problem temporarily resolves when trunk is opened and connections are manually checked
Repairs/costs cited: Dealership does not acknowledge issue and expects owner to pay for full electrical system replacement rather than simple camera/wiring repair.
Remote start feature fails to function after battery sensor module fault. Push-to-start button does not engage the starter motor consistently. Vehicle pressed or held but does not turn over, or takes extended time (10+ minutes) to start.
When: Can occur from days after purchase onward
Symptoms owners cite: Remote start does not function; Push-to-start button does not respond or responds only after multiple presses; Extended delay (10+ minutes) before engine cranks; Vehicle does not start on first or subsequent attempts; Steering wheel locked when vehicle fails to start
Codes mentioned: U01B0 (Battery Sensor Module)
Repairs/costs cited: ECM and accelerator pedal sensor replacement performed, but failure recurred at ~88,000 miles.
Recalls/TSBs owners mention: Dealer stated 'no fix' exists for U01B0 code; engineering reviewing 2017–2018 models; corporate deferred complainants back to dealers.
Vehicle hesitates, stutters, or refuses to accelerate when throttle is pressed. Problem is worsened by auto start/stop feature engagement. Hard acceleration sounds followed by sluggish response. Occurs most critically at traffic lights and highway merge situations.
When: Throughout ownership; exacerbated after auto start/stop engagement
Symptoms owners cite: Throttle input results in loud engine struggle/strain without proportional power delivery; Hard hesitation or stutter when pressing gas pedal; Vehicle will not accelerate at traffic lights or highway merges; Engine sounds strained and loud while struggling for power; Problem worse immediately after auto start/stop re-engagement
Synthesized from 122 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
In may of 2020 I took my vehicle to a Chevrolet dealership in woodbridge,va for a ECM recall on my vehicle. After waiting for them to do the recall they stated nothing was wrong with my vehicle. From october to current my vehicle has been doing everything that was stated in the recall which lead me to believe that they never changed the part. My vehicle has shut off on me in the middle of the…
The car says it's not in park when you shut it off. The fob seems to not respond sometimes. Sometimes it won't start and tells you to put it into the center console pocket but it still won't respond. It will say there is no fob in the car. I replaced the battery to make sure that wasn't the issue. Even with the fob in the car, it set off the alarm when I tried to start it. It took almost 5…
It's a documented issue but not catastrophic. 122 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
Across the 41 complaints that reported odometer mileage, most electrical failures cluster between 35,000 and 59,610 miles, with the median around 46,560. A quarter of owners report trouble before 35,000; a quarter make it past 59,610. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Yes — 1 active recall(s) cover electrical issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.