Hyundai · Known Issues

2021 Hyundai i20 Problems: 2 Known Issues

2021 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated August 2026

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Hyundai i20 has 2 documented known issues, with 1 rated critical. The most serious is Fuel Pump Impeller Failure — Engine Stall Recall (51DT07, RAPEX Alert 40/2025). Across all issues with published estimates, repair costs range from $1,200 to $2,500. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common Hyundai i20 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2021 Hyundai i20 has 2 documented issues. The most frequently reported are: Fuel Pump Impeller Failure — Engine Stall Recall (51DT07, RAPEX Alert 40/2025), 7-Speed Dual-Clutch (7DCT) Judder, Hesitation and Overheating. Of these, 1 is rated critical and should be addressed promptly.

Is the Hyundai i20 reliable?

The 2021 Hyundai i20 has 2 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Fuel Pump Impeller Failure — Engine Stall Recall (51DT07, RAPEX Alert 40/2025). 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 i20 problems?

Repair costs for known Hyundai i20 issues range from $1,200 to $2,500, 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 2021-2023 Hyundai i20 Fuel Pump Impeller Failure — Engine Stall Recall (51DT07, RAPEX Alert 40/2025)?

EU Safety Gate alert SR/03401/25 covers Hyundai i20, i20 N and Bayon vehicles under campaign 51DT07. The alert says the fuel-pump impeller can swell from fuel exposure and high operating temperatures until it contacts the pump housing. Fuel delivery can then fall, causing loss of… Severity: high.

What is the 2016-2024 Hyundai i20 7-Speed Dual-Clutch (7DCT) Judder, Hesitation and Overheating?

i20s with the 1.0 T-GDi engine and dry-clutch 7-speed DCT (GB facelift and BC3 generations) commonly exhibit judder and hesitation from a standstill and transmission overheating warnings in heavy stop-and-go traffic. Because the dry clutches have no oil bath for cooling, repeated… Repairs typically run $1,200-$2,500. Severity: medium.

2021 Hyundai i20 Problems: 2 Known Issues

All 2 Known Issues

2021-2023 Hyundai i20: Fuel Pump Impeller Failure — Engine Stall Recall (51DT07, RAPEX Alert 40/2025)#

Common Symptoms

How to Fix

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2016-2024 Hyundai i20: 7-Speed Dual-Clutch (7DCT) Judder, Hesitation and Overheating#