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Hyundai · Known Issues

2017 Hyundai Grandeur Problems: 3 Known Issues

2017 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated August 2026

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Issue summary

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2017 Hyundai Grandeur has 3 documented known issues, with 1 rated critical. The most serious is Theta II 2.4 GDI connecting-rod bearing wear and engine seizure (Grandeur IG 2.4). Across all issues with published estimates, repair costs range from $50 to $1,200. DIY maintenance guides at au7o.io.

In This Article

  • Grandeur Engine2
  • Grandeur Steering1
  • FAQ
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In This Article

  • Engine2
  • Steering1
  • FAQ

All 3 Known Issues

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On the 2017-2019 Hyundai Grandeur, hyundai identifies the Grandeur among Korea-market Theta II GDI vehicles receiving expanded Knock Sensor Detection System (KSDS) coverage and a lifetime engine warranty limited to connecting-rod-bearing seizure. Hyundai's official 2019 Grandeur specification identifies its engine as the improved Theta II 2.4 GDi. Hyundai's disclosure also provides compensation terms for eligible customers who experienced engine stoppage or fire because of the covered engine defect.

Common Symptoms

  • Engine stoppage in a covered connecting-rod-bearing-seizure case
  • Engine fire in a covered engine-defect case

How to Fix

Ask a Hyundai service center to check the VIN for applicable KSDS and engine-warranty coverage. KSDS is monitoring software rather than a mechanical repair; any inspection, warranty decision or engine repair depends on the vehicle's eligibility and Hyundai's diagnosis.

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Manually Verified
High ConfidenceVerifiedReviewed Aug 2026

On the 2017-2020 Hyundai Grandeur, a chronic problem (고질병) repeatedly cited in Korean owner communities for the Grandeur IG — and its Kia K7 sibling — is engine oil seepage from the front case (timing chain cover), typically appearing after roughly 50,000 km. The sealant between the front case and the block degrades, letting oil weep down the front of the engine; documented cases on the 3.0 V6 describe undercarriage panels soaked in oil, and the issue is also widely reported on 2.4 GDI cars. CV-joint (등속조인트) grease/oil leaks are mentioned alongside it as a related underbody finding during used-car inspections. Left alone, the leak worsens, can foul the drive belt area and triggers low-oil-level conditions.

Common Symptoms

  • Oil seepage or wet residue on the front of the engine block
  • Oil spots under the front of the car
  • Burning oil smell after driving
  • Engine oil level slowly dropping between services
  • Oil-soaked underbody covers found during inspection

How to Fix

Confirm the source with a degrease-and-recheck or UV dye test, since valve cover and CV-joint leaks look similar. The fix is to remove the front timing cover, clean both surfaces, and reseal with fresh liquid gasket — a labor-intensive job (roughly 300,000-700,000 KRW at Korean shops, a few hundred USD). Cars still inside the powertrain warranty have had it resealed free at Hyundai service centers; used-car performance-guarantee insurance has also covered it. Check the oil level regularly until repaired.

Typical repair cost:$250 - $700

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Medium ConfidenceVerifiedReviewed Jun 2026

On the 2017-2022 Hyundai Grandeur, grandeur IG models (including the 2020+ facelift) with column-mounted electric power steering (C-MDPS) commonly develop a rattling, knocking or 'clunking' noise when the wheel is turned at a stop or at low speed. The noise comes from wear in the steering column's damping components — the flexible coupling and column bearing that prevent metal-to-metal contact. As the parts wear, owners also report increased steering play and a vague or notchy steering feel. The complaint is heavily documented across Korean owner communities (Bobaedream, Clien, AutoView boards) and on Namu Wiki's 6th-generation Grandeur page. Hyundai never declared it an official defect, but Blue Hands service centers perform goodwill free repairs — originally just the coupling/bearing, and more recently full MDPS assembly replacement when needed.

Common Symptoms

  • Rattle or knock from the steering column when turning at a standstill or low speed
  • Clicking/grinding felt through the steering wheel rim
  • Increased free play in the steering wheel
  • Vague or notchy steering feel as wear progresses

How to Fix

Take the car to a Hyundai Blue Hands or direct service center and reproduce the noise; Hyundai has been replacing the worn coupling/bearing — and in persistent cases the entire MDPS assembly — free of charge as a goodwill repair even out of warranty. If paying out of pocket at an independent shop, a coupling replacement is cheap, while a full column/MDPS unit replacement is a four-figure job in USD terms.

Typical repair cost:$50 - $1,200

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Frequently Asked Questions

What are the most common Hyundai Grandeur problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2017 Hyundai Grandeur has 3 documented issues. The most frequently reported are: Theta II 2.4 GDI connecting-rod bearing wear and engine seizure (Grandeur IG 2.4), Engine front case (timing cover) oil leak (Grandeur IG), C-MDPS steering column clunk and rattle (Grandeur IG). Of these, 1 is rated critical and should be addressed promptly.

Is the Hyundai Grandeur reliable?

The 2017 Hyundai Grandeur has 3 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Theta II 2.4 GDI connecting-rod bearing wear and engine seizure (Grandeur IG 2.4). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Hyundai Grandeur problems?

Repair costs for known Hyundai Grandeur issues range from $50 to $1,200, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2017-2019 Hyundai Grandeur Theta II 2.4 GDI connecting-rod bearing wear and engine seizure (Grandeur IG 2.4)?

Hyundai identifies the Grandeur among Korea-market Theta II GDI vehicles receiving expanded Knock Sensor Detection System (KSDS) coverage and a lifetime engine warranty limited to connecting-rod-bearing seizure. Hyundai's official 2019 Grandeur specification identifies its engine… Severity: high.

What is the 2017-2020 Hyundai Grandeur Engine front case (timing cover) oil leak (Grandeur IG)?

A chronic problem (고질병) repeatedly cited in Korean owner communities for the Grandeur IG — and its Kia K7 sibling — is engine oil seepage from the front case (timing chain cover), typically appearing after roughly 50,000 km. The sealant between the front case and the block degrad… Repairs typically run $250-$700. Severity: medium.

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data compiled from NHTSA recalls, manufacturer TSBs, automotive forums, and AI-assisted research. No aggregated owner-report counts available for this vehicle yet.

What is the 2017-2022 Hyundai Grandeur C-MDPS steering column clunk and rattle (Grandeur IG)?

Grandeur IG models (including the 2020+ facelift) with column-mounted electric power steering (C-MDPS) commonly develop a rattling, knocking or 'clunking' noise when the wheel is turned at a stop or at low speed. The noise comes from wear in the steering column's damping componen… Repairs typically run $50-$1,200. Severity: medium.