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Hyundai · Compact · 2021–2025 Custom Search

Hyundai Elantra CN7

Weaknesses, engine ratings and buying advice

★★★★★
2.0 / 5.0 · Based on 2 engine variants

Generations

Engine Overview

The Hyundai Elantra CN7 is available with 2 engine variants — from 150 to 186 hp.

2.0L MPI (Smartstream) · Petrol· 150 PS
2021 2025
Be Careful 6 weaknesses
Show all weaknesses →
Elantra N Line · Petrol· 204 PS
2021 2025
Stay Away! 8 weaknesses
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The Hyundai 2.0L MPI (Smartstream) (Petrol, 150 PS) has the G4NL (2.0L MPI (Smartstream)) — rated: "Be Careful", 6 known weaknesses.

The Hyundai Elantra N Line (Petrol, 204 PS) has the G4FJ (1.6L T-GDI (Gamma II)) — rated: "Stay Away!", 8 known weaknesses.

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Vehicle Weaknesses

WeaknessCost
!IVT (Smartstream CVT) shudder, surge & TCU calibration

Smartstream IVT exhibits shudder, surge, slipping and droning, often before 30,000 km. Hyundai TSB 20-01-047H reflashes the TCU; persistent cases get a complete IVT replacement under 10y/100k powertrain warranty.

Symptoms: Shudder pulling away, surging at part throttle, droning/whining noise, occasional CEL
from 32,000 km
Ad IVT transmission Elantra CN7Smartstream CVT Hyundai Elantra
 High

Alternatives

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Acura Integra DE5

Compact (2023–2025)

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Citroën C4 X I

Compact (2023–2026)

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VW ID.3 I-FL

Compact (2023–2026)

Same Segment

BMW 2er U06

Compact (2022–2025)

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Honda Civic Type R FL5

Compact (2022–2026)

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Opel Astra L

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Known Problems and Issues

A total of 20 weaknesses have been documented for the Hyundai Elantra CN7 (2021–2025) — 14 engine-related and 6 vehicle-related. One problem engine: G4FJ (1.6L T-GDI (Gamma II)). Typical issues affect Gearbox, Electronics, Steering, Brakes.

Elantra (G4FJ, 2021–2025) — Stay Away!: Fuel contamination of engine oil, Turbocharger oil coking, LSPI: pre-ignition at low rpm. Power: 204 PS.

Elantra (G4NL, 2021–2025) — Be Careful: Engine knock from defective piston rings (Recall 21V301), Catalytic converter breakdown with engine damage, Timing chain rattle at higher mileage. Power: 150 PS.

What to watch out for with the Hyundai Elantra? See the detailed listing of all engine and vehicle weaknesses in the sections above.

Frequently Asked Questions

What problems and weaknesses does the Hyundai Elantra CN7 have? +
The Hyundai Elantra CN7 has 14 known engine weaknesses and 6 vehicle weaknesses.
What should I look for when buying a used Hyundai Elantra CN7? +
faq.watch_a_avoid
Which engine is recommended? +
Be careful: G4NL (2.0L MPI (Smartstream)). No engine is rated 'Good Choice'. The most fun to drive is the G4FJ (1.6L T-GDI (Gamma II)). Problem engine: G4FJ (1.6L T-GDI (Gamma II)) — stay away!
Which Hyundai Elantra CN7 engine is the most fun? +
The {code} ({displacement}) offers the most driving fun in the Hyundai Elantra CN7 — rated: "Fun to Drive!". {description} The 1.6 T-GDI in the N Line puts 201 hp through a 7-speed DCT. Firmer setup than the base, but not a true N.
Is the Hyundai Elantra CN7 worth buying used? +
Caution is advised with the Hyundai Elantra CN7 — 1 of 2 engine variants are rated 'Stay Away!'. The engine choice is crucial.
What horsepower variants are available for the Hyundai Elantra CN7? +
The Hyundai Elantra CN7 is available with engine variants from 150 to 186 hp. Petrol: G4FJ (1.6L T-GDI (Gamma II)), G4NL (2.0L MPI (Smartstream)).

Last updated: February 2026 · All information without guarantee