Hyundai Bayon BC3
Weaknesses, engine ratings and buying advice
Engine Overview
The Hyundai Bayon BC3 is available with 3 engine variants — from 78 to 120 hp. 1 variants had engine changes — the model year is crucial.
The Hyundai 1.0L T-GDI (Smartstream) (Benziner, 101 PS) has the G3LE (1.0L T-GDI (Smartstream)) — rated: "Be Careful", 5 known weaknesses.
The Hyundai 1.2L (Smartstream) (Benziner, 78–84 PS) has the G4LF (1.2L (Smartstream)) — rated: "Good Choice", 5 known weaknesses.
The Hyundai 1.0L T-GDI (Smartstream) (Benziner Mild-Hybrid, 101–120 PS) comes with 2 different engines: G3LE (2021–2024, Be Careful) und G3LE (2021–2024, Be Careful). Pay attention to the model year for the 1.0L T-GDI (Smartstream)!
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Front camera fault disrupts CAN bus and all assist systems Faulty front camera can disrupt the vehicle's CAN bus and cause all sensors and driver assist systems to fail simultaneously. Vehicle no longer starts, keyless entry does not work. Symptoms: All warning indicators simultaneously active; vehicle does not start; collision warning repeatedly fails; key not recognised from 30,000 km | Medium | |
| Severe electrical problems caused by front camera The Bayon BC3's front camera repeatedly causes severe electrical faults, up to complete vehicle failure. Driver assistance systems fail repeatedly, sometimes multiple incidents per vehicle within a short period. Symptoms: All driver assistance warning lights active, vehicle won't start or stalls while driving, camera error message on display from 30,000 km | High | |
| Driver assist failure from CAN bus interference Front camera triggers CAN bus interference that simultaneously disables all vehicle assists and sensors. 3–4 incidents in a few months documented on individual vehicles. Symptoms: All driver assist warning lights illuminate simultaneously, keyless entry fails, system requires restart from 20,000 km | Low | |
| Start-stop system and battery problems The Bayon BC3's start-stop system often works only briefly after a battery replacement. AGM batteries discharge quickly, especially on short trips. Battery replacement frequently occurs within the warranty period. Symptoms: Start-stop permanently deactivated, battery drains quickly, cold start problems from 40,000 km | Low | |
| Parking sensors fail Parking sensors fail after 20,000–40,000 km, often due to sensor failures or incorrect calibrations. Typical early-production issue. Symptoms: Parking assist continuous tone without obstacle, no signal, warning in display from 30,000 km | Low |
Alternatives
Fiat 500e 332
Kleinwagen (2020–2026)
Honda Jazz GR
Kleinwagen (2020–2024)
Honda e ZC7
Kleinwagen (2020–2024)
Smart ForFour 453-FL
Kleinwagen (2020–2024)
Suzuki Swift VI-FL
Kleinwagen (2020–2024)
Toyota Yaris XP210
Kleinwagen (2020–2025)
Known Problems and Issues
A total of 20 weaknesses have been documented for the Hyundai Bayon BC3 (2021–2024) — 10 engine-related and 10 vehicle-related. Typical issues affect Electronics, Other, Brakes, Interior. Considered reliable: G4LF (1.2L (Smartstream)).
Bayon (G3LE, 2021–2024) — Be Careful: Turbo oil supply Smartstream, GDI valve carbon buildup Smartstream, Timing chain wear Smartstream T-GDi. Power: 101 PS.
Bayon (G3LE, 2021–2024) — Be Careful: Turbo oil supply Smartstream, GDI valve carbon buildup Smartstream, Timing chain wear Smartstream T-GDi. Power: 101 PS.
Bayon (G3LE, 2021–2024) — Be Careful: Turbo oil supply Smartstream, GDI valve carbon buildup Smartstream, Timing chain wear Smartstream T-GDi. Power: 120 PS.
What to watch out for with the Hyundai Bayon? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
What problems and weaknesses does the Hyundai Bayon BC3 have? +
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Last updated: February 2026 · All information without guarantee