Hyundai Grandeur HG — Problems & Common Faults

The Grandeur HG is the fifth generation of Hyundai's Korean flagship sedan — significantly better built than the TG predecessor, but still a niche vehicle in Western markets. Direct injection, VVT, comprehensive standard equipment: technically up to date for its era.

Test drive: G6DJ 3.8 V6 Lambda II 260 hp: the only engine in the European KB. Big displacement, a coupé-like exhaust note, real urgency. Typical Lambda II issue: GDI injectors allow carbon buildup on intake valves — noticeable after 50,000–65,000 miles with lower quality fuel. Walnut blasting runs $350–$600, worth doing at purchase. Automatic: Aisin 6-speed is reliable, but don't skip transmission fluid changes every 40,000 miles. Oil consumption is modest but real in higher-mileage examples. Suspension: tuned for comfort, not agility — shock absorbers and mounts check needed at 75,000 miles. Electrical comfort features (rear sunshade motor etc.) are the first things to fail on aged examples.

Market 2026: Scarce in the US. Korean imports occasionally appear. Expect $6,500–$14,000 for a solid HG. Parts sourcing is more difficult than for the TG — Korean importers are the main resource for complex assemblies.

Insider pick: HG with documented oil change intervals under 6,000 miles — oil discipline is everything with the Lambda II. Budget for intake valve cleaning at purchase.