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Hyundai · Mid-Size · 2001–2004 Custom Search

Hyundai Sonata EF-FL

Weaknesses, engine ratings and buying advice

★★★★★
1.0 / 5.0 · Based on 1 engine variants · How we rate

Generations

Engine Overview

The Hyundai Sonata EF-FL is available with one engine variant at 165 hp.

2.7L V6 (Delta) · Petrol· 173 PS
2001 2004

Six-cylinder that likes to rev. Chain-driven, moderate upkeep costs for a V6.

  • !! Timing Belt Failure — Interference Engine from 90,000 km

    The G6BA is a DOHC interference engine with a timing belt. A belt failure inevitably destroys the valvetrain on both cylinder heads. The 90,000 km / 6-year service interval is frequently exceeded on used vehicles.

    Symptoms: Sudden engine cutout without warning, no restart possible. After the break, engine noise is typical on attempted start.
    2,000–5,000 $
    Ad timing beltsatz G6BAtiming belt kit 2.7 V6 Santa Fe Sonata24312-37110
  • !! Water Pump Belt Drive Leaks from 90,000 km

    The belt-driven water pump on the 2.7L V6 leaks at the shaft seal. Coolant can drip onto the timing belt and trigger belt failure. Preventive replacement at every belt service is mandatory.

    Symptoms: Coolant loss without external leak, coolant staining in the timing belt area, risk of overheating.
    400–900 $
    Ad water pump G6BAwater pump 2.7 V6 Santa Fe25100-37101
  • !! Timing Belt Fails Prematurely from 90,000 km

    The G6BA 2.7L V6 uses a timing belt with a service interval of 90,000–120,000 km. Missing this service risks belt failure and total engine destruction through valve contact — service history is often unverifiable on used vehicles.

    Symptoms: Engine stall without warning, no restart, dull impacts on cranking attempt, severely damaged valves
    690–1,070 $
    Ad timing belt G6BA 2.7 V6timing beltsatz Hyundai Santa Fe 2.7 Deltawater pump G6BA

+ 4 more engine weaknesses + vehicle weaknesses

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Known Problems and Issues +

A total of 7 weaknesses have been documented for the Hyundai Sonata EF-FL (2001–2004). One problem engine: G6BA (2.7L V6 (Delta)).

Sonata (G6BA, 2001–2004) — Stay Away!: Timing Belt Failure — Interference Engine, Water Pump Belt Drive Leaks, Timing Belt Fails Prematurely. Power: 173 PS.

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

Frequently Asked Questions

What problems and weaknesses does the Hyundai Sonata EF-FL have? +
The Hyundai Sonata EF-FL has 7 known engine weaknesses.
What should I look for when buying a used Hyundai Sonata EF-FL? +
faq.watch_a_avoid
Which engine is recommended? +
None of the available engines are rated 'Good Choice'. Stay away! The most fun to drive is the G6BA (2.7L V6 (Delta)). Problem engine: G6BA (2.7L V6 (Delta)) — stay away!
Which Hyundai Sonata EF-FL engine is the most fun? +
The {code} ({displacement}) offers the most driving fun in the Hyundai Sonata EF-FL — rated: "Decent". {description} The Sonata is a sensible, spacious Korean sedan. Reliable, economical, and making no attempt at excitement.
Is the Hyundai Sonata EF-FL worth buying used? +
Caution is advised with the Hyundai Sonata EF-FL — 1 of 1 engine variants are rated 'Stay Away!'. The engine choice is crucial.
What horsepower variants are available for the Hyundai Sonata EF-FL? +
The Hyundai Sonata EF-FL is available with engine variants from 165 to 175 hp. Petrol: G6BA (2.7L V6 (Delta)).

Last updated: February 2026 · All information without guarantee