Is the Audi A4 more reliable than the Hyundai Ioniq 6?

No, the Ioniq 6 has a slight edge. Both rate good, but the Ioniq 6 draws 0.9 owner complaints per 10,000 sold against 2.8 for the A4. The Ioniq 6 is newer, though, so it has had less time to collect complaints.

Which has more recalls, the Audi A4 or the Ioniq 6?

The A4 has more, with 16 recalls across 6 model years in federal recall records. The Ioniq 6 has 13 across 4 model years. The gap is small, and the A4 has simply been on the road across more model years.

What is the most common problem with the Hyundai Ioniq 6?

Failure of the integrated charging control unit (ICCU) dominates the reports. A warning appears, the car drops into a limp mode near 22 mph, and some cars then shut down in traffic. The 12-volt battery often dies too, so the car needs a tow.

What goes wrong with the Audi A4's electrical system?

The digital instrument cluster goes blank or keeps rebooting, sometimes while the car is moving. The speedometer, fuel gauge and warning messages disappear. Separate MMI screen reboots can disable the backup camera and parking alerts. Electrical complaints make up most of the A4's total.

Which model years of the A4 and Ioniq 6 should I avoid?

For the A4, avoid 2018 and 2020, the weakest years. For the Ioniq 6, avoid 2023 and 2024. The Ioniq 6's 2025 and 2026 years rank strongest, but they have had less time to collect complaints, so check any car's history.

Last updated: 2026-10-10

Audi A4 vs Hyundai Ioniq 6: Reliability Compared

Audi A4

Good

More Reliable

Hyundai Ioniq 6

Good

Used shoppers get a slight reliability edge from the Hyundai Ioniq 6 over the Audi A4, with far fewer owner complaints per car sold. The A4 still rates good, but its complaints center on a digital instrument cluster that goes blank or keeps rebooting.

How Do the Audi A4 and Hyundai Ioniq 6 Generations Compare?

Each car's model years fall inside a single generation, and one facelift splits each range. The A4 is a fifth generation (B9) car, a generation that began with US model years in 2016. A facelift arrived in 2020. That puts 2018 before the facelift and 2020 in its first year, and both are among the weakest years in the data. The 2023 model is one of the strongest. The Ioniq 6 is a first generation (CE) car, sold in the US since 2023, with a facelift in 2025. Its 2023 and 2024 cars predate that facelift and rank weakest. The 2025 and 2026 years rank strongest, though they have had less time on the road.

Verdict

The Hyundai Ioniq 6 is more reliable than the Audi A4, scoring 77/100 vs 73/100.

Slight edge goes to the Hyundai Ioniq 6, and both cars hold a good standing. The deciding factor is owner complaints: 0.9 per 10,000 sold against 2.8 for the Audi A4. The Ioniq 6 is also newer and has had less time to collect complaints, which keeps the lead small. The A4 has a longer record, and its complaints pile up around one failure, the blank instrument cluster. Neither car is a clear avoid, but the Ioniq 6 looks a little cleaner on paper.

Key Differences

1Hyundai Ioniq 6 scores 4 points higher in reliability
2Hyundai Ioniq 6 has 3 fewer total recalls
3Hyundai Ioniq 6 has 1.9 fewer complaints per 10k sold

Category Scoreboard

0Audi A4

—

3Hyundai Ioniq 6

Reliability ScoreTotal RecallsComplaint Rate

Audi A4 vs Hyundai Ioniq 6: Which Is More Reliable?

Audi A4 vs Hyundai Ioniq 6 at-a-glance reliability comparison
Metric	Audi A4	Hyundai Ioniq 6
Reliability Score	73/100	77/100
Years Tracked	6	4
Total Recalls	16	13
Complaints per 10k Sold	2.8	0.9
Year Wins	2	0

What Are the Common Problems With the Audi A4 and Hyundai Ioniq 6?

Each car has one dominant failure. In the A4, the digital instrument cluster goes blank or keeps rebooting, sometimes while moving, and MMI screen reboots can cut out the backup camera and parking alerts. In the Ioniq 6, the integrated charging control unit fails, the car drops into a limp mode near 22 mph, and some cars shut down in traffic. The 12-volt battery often dies with it. The A4 also has crash-linked reports in air bags and suspension, including a case where no airbags deployed. The Ioniq 6 has none there. Its one crash-linked report sits in the electrical system.

Audi A4 vs Hyundai Ioniq 6 common problem areas comparison
Component	Audi A4	Hyundai Ioniq 6
ELECTRICAL SYSTEM	1.9Low	0.5Very Low
UNKNOWN OR OTHER	0.7Very Low	0.1Very Low
POWER TRAIN	0.1Very Low	0.1Very Low
BACK OVER PREVENTION	0.1Very Low	—None
AIR BAGS	0.1Very Low	—None
SUSPENSION	—None	—None
SERVICE BRAKES	—None	—None
FUEL/PROPULSION SYSTEM	—None	—None
FORWARD COLLISION AVOIDANCE	—None	—None
VISIBILITY/WIPER	—None	—None
VEHICLE SPEED CONTROL	—None	—None
STEERING	—None	—None

Complaints per 10,000 units sold, aggregated across all tracked model years from NHTSA owner reports.

How Does Audi A4 vs Hyundai Ioniq 6 Reliability Compare by Year?

Audi A4 vs Hyundai Ioniq 6 year-by-year reliability scores
Year	Audi A4	Hyundai Ioniq 6	Edge
2025	81/1000R / 0C	79/1003R / 30C	Audi A4
2023	77/1000R / 8C	69/1005R / 54C	Audi A4

Best years to cross-shop: The 2023 Audi A4 scored 77/100 and the 2023 Hyundai Ioniq 6 scored 69/100 — the strongest shared model years that have been on the road for at least two years, where available.

Who Should Buy the Audi A4 vs the Hyundai Ioniq 6?

Pick the Ioniq 6 if you want the lower complaint rate and can accept a short track record. Target 2025 or 2026, the strongest years, but remember they have had less time to collect complaints. Avoid 2023 and 2024, the weakest. Ask whether the charging control unit has ever been replaced, because failures can recur afterward and parts can take weeks. Pick the A4 if you want a longer record behind the car and a good standing overall. Target 2023 or 2025, the strongest years, and avoid 2018 and 2020, the weakest. On a test drive, watch the instrument cluster and MMI screen for blanking or restarts, since owners report dealers quoting full-price repairs. Check for open air bag recalls too. Some owners wait on parts with no date from the dealer.

Audi A4 vs Hyundai Ioniq 6: Common Questions

Is the Audi A4 more reliable than the Hyundai Ioniq 6?: No, the Ioniq 6 has a slight edge. Both rate good, but the Ioniq 6 draws 0.9 owner complaints per 10,000 sold against 2.8 for the A4. The Ioniq 6 is newer, though, so it has had less time to collect complaints.
Which has more recalls, the Audi A4 or the Ioniq 6?: The A4 has more, with 16 recalls across 6 model years in federal recall records. The Ioniq 6 has 13 across 4 model years. The gap is small, and the A4 has simply been on the road across more model years.
What is the most common problem with the Hyundai Ioniq 6?: Failure of the integrated charging control unit (ICCU) dominates the reports. A warning appears, the car drops into a limp mode near 22 mph, and some cars then shut down in traffic. The 12-volt battery often dies too, so the car needs a tow.
What goes wrong with the Audi A4's electrical system?: The digital instrument cluster goes blank or keeps rebooting, sometimes while the car is moving. The speedometer, fuel gauge and warning messages disappear. Separate MMI screen reboots can disable the backup camera and parking alerts. Electrical complaints make up most of the A4's total.
Which model years of the A4 and Ioniq 6 should I avoid?: For the A4, avoid 2018 and 2020, the weakest years. For the Ioniq 6, avoid 2023 and 2024. The Ioniq 6's 2025 and 2026 years rank strongest, but they have had less time to collect complaints, so check any car's history.

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How we score the Audi A4 and Hyundai Ioniq 6

Scores weight complaint severity at 35%, repair costs at 30%, recall impact at 20%, and the spread of complaints across systems at 15%, with complaint counts adjusted for US sales. Read the full methodology.

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