Is the Audi A4 more reliable than the BMW 4-Series?

Yes, and by a large margin. The A4 has about 2.8 owner complaints per 10,000 sold, while the 4-Series has 15.8. The 4-Series also has many more recalls. Its complaints cover air bags, brakes, coolant leaks, and shutoffs, while the A4's are mostly a rebooting display.

Which has more recalls, the A4 or the 4-Series?

The 4-Series has far more. Federal recall records show 182 recalls across 9 model years for the 4-Series, against 16 across 6 model years for the A4. Check any specific car's VIN for open recalls, because owners of both report waiting on parts.

What goes wrong most often on the Audi A4?

Electrical faults lead the complaints. The digital instrument cluster goes blank or keeps rebooting, sometimes while driving, and the speedometer and warning messages disappear. MMI screen reboots can also cut the backup camera and parking alerts. Owners say dealers often quote a full-price repair.

Are 4-Series air bag warnings a serious problem?

They can be. The most common air bag complaint is a "Passenger restraint system malfunction" or "Air Bag Off" warning. Dealers say the air bags may not deploy while it shows. Fixes have included a new seat and mat, a wiring harness, or a control unit.

Which A4 and 4-Series model years should I avoid?

Avoid 2020 and 2018 on both cars, since both are rated among the weakest years. The newest years rank well for each, but they have had less time to collect complaints. For the A4, 2023 is a stronger choice with more history behind it.

Last updated: 2026-10-10

Audi A4 vs BMW 4 Series: Reliability Compared

More Reliable

Audi A4

Good

BMW 4 Series

Good

On reliability, the Audi A4 beats the BMW 4-Series by a wide margin. It draws far fewer owner complaints per car sold and far fewer recalls. The 4-Series adds serious air bag, brake, and engine cooling complaints, while the A4's main fault is a rebooting screen.

How Do the Audi A4 and BMW 4 Series Generations Compare?

Weak years on both cars sit near generation or facelift changes. The A4 sold in the US as the fifth generation (B9) from 2016 to 2023, with a facelift that began in 2020 and covers cars through 2025. That makes 2018 a pre-facelift car and 2020 the first facelift year, and both rank among its weakest. The 4-Series first generation (F32/F33/F36) ran from 2014 to 2020, and the second (G22/G23/G26) ran from 2020 to 2023. So 2018 is a late first-generation car, and 2020 is the changeover year, also among its weakest.

Verdict

The Audi A4 is more reliable than the BMW 4 Series, scoring 73/100 vs 60/100.

Reliability favors the Audi A4, and the gap is large. Owners file about 2.8 complaints per 10,000 A4s sold, against 15.8 for the 4-Series. The 4-Series also has 182 recalls across 9 model years, while the A4 has 16 across 6. The A4's main fault is a digital instrument cluster that goes blank or reboots. The 4-Series problems reach deeper: air bag warnings, coolant leaks, brake faults, and a car that shuts off while moving.

Key Differences

1Audi A4 has 166 fewer total recalls
2Audi A4 scores 13 points higher in reliability
3Audi A4 has 13.0 fewer complaints per 10k sold

Category Scoreboard

3Audi A4

—

0BMW 4 Series

Reliability ScoreTotal RecallsComplaint RateSafety Rating

Audi A4 vs BMW 4 Series: Which Is More Reliable?

Audi A4 vs BMW 4 Series at-a-glance reliability comparison
Metric	Audi A4	BMW 4 Series
Reliability Score	73/100	60/100
Years Tracked	6	9
Total Recalls	16	182
Complaints per 10k Sold	2.8	15.8
Safety RatingNHTSA overall	2025 NHTSA	2026 NHTSA
Frontal
Side
Rollover
Year Wins	6	0

What Are the Common Problems With the Audi A4 and BMW 4 Series?

Most A4 complaints are electrical. The instrument cluster goes blank or keeps rebooting, and MMI restarts can knock out the backup camera and parking alerts. Annoying and sometimes unsafe, but it is one fault repeated. The 4-Series spreads across several systems. Owners report "Air Bag Off" warnings, coolant leaks that lead to overheating, a shifter that slips into neutral, and brake pedals that sink or grab. Air bags (12 crash-linked) and service brakes (8 crash-linked) are crash-linked areas where the A4 has no comparable brake listing and far fewer air bag crash reports.

Audi A4 vs BMW 4 Series common problem areas comparison
Component	Audi A4	BMW 4 Series
ELECTRICAL SYSTEM	1.9Low	2.3Low
UNKNOWN OR OTHER	0.7Very Low	1.7Low
AIR BAGS	0.1Very Low	1.7Low
ENGINE	—None	1.3Low
POWER TRAIN	0.1Very Low	0.9Very Low
SERVICE BRAKES	—None	0.8Very Low
SEAT BELTS	—None	0.5Very Low
ENGINE AND ENGINE COOLING	—None	0.4Very Low
BACK OVER PREVENTION	0.1Very Low	0.2Very Low
STRUCTURE	—None	0.3Very Low
VEHICLE SPEED CONTROL	—None	0.2Very Low
STEERING	—None	0.2Very Low
EXTERIOR LIGHTING	—None	0.2Very Low
SUSPENSION	—None	0.1Very Low
ELECTRONIC STABILITY CONTROL (ESC)	—None	0.1Very Low
SEATS	—None	0.1Very Low
TIRES	—None	0.1Very Low
LANE DEPARTURE	—None	0.1Very Low
FUEL/PROPULSION SYSTEM	—None	0.1Very Low
VISIBILITY	—None	0.1Very Low

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

How Does Audi A4 vs BMW 4 Series Reliability Compare by Year?

Audi A4 vs BMW 4 Series year-by-year reliability scores
Year	Audi A4	BMW 4 Series	Edge
2025	81/1000R / 0C	67/1009R / 2C	Audi A4
2023	77/1000R / 8C	63/10026R / 43C	Audi A4
2022	72/1004R / 3C	66/10018R / 36C	Audi A4
2021	71/1005R / 12C	57/10040R / 64C	Audi A4
2020	65/1003R / 122C	52/10034R / 66C	Audi A4
2018	71/1004R / 35C	54/10021R / 261C	Audi A4

Best years to cross-shop: The 2023 Audi A4 scored 77/100 and the 2022 BMW 4 Series scored 66/100 — 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 BMW 4 Series?

Pick the A4 if you want the lower-risk used car. It has far fewer complaints and recalls, and owners report about 0.4 unscheduled shop visits a year. Target 2023, one of its strongest years. The 2025 model also ranks well, but it is new and has had little time to collect complaints. Avoid 2020 and 2018, its weakest years. On a test drive, watch the instrument cluster and MMI screen for blanking or restarts, and ask the dealer about open air bag recalls, since parts have been slow to arrive. Pick the 4-Series only if you specifically want the coupe and will inspect carefully. Skip 2020 and 2018, its weakest years. The 2024 model ranks well, but its clean record partly reflects less time on the road. Check that no air bag or passenger restraint warning appears, ask for coolant system service history, and confirm the shifter stays in Drive. Get proof that every recall repair was completed before you buy.

Audi A4 vs BMW 4 Series: Common Questions

Is the Audi A4 more reliable than the BMW 4-Series?: Yes, and by a large margin. The A4 has about 2.8 owner complaints per 10,000 sold, while the 4-Series has 15.8. The 4-Series also has many more recalls. Its complaints cover air bags, brakes, coolant leaks, and shutoffs, while the A4's are mostly a rebooting display.
Which has more recalls, the A4 or the 4-Series?: The 4-Series has far more. Federal recall records show 182 recalls across 9 model years for the 4-Series, against 16 across 6 model years for the A4. Check any specific car's VIN for open recalls, because owners of both report waiting on parts.
What goes wrong most often on the Audi A4?: Electrical faults lead the complaints. The digital instrument cluster goes blank or keeps rebooting, sometimes while driving, and the speedometer and warning messages disappear. MMI screen reboots can also cut the backup camera and parking alerts. Owners say dealers often quote a full-price repair.
Are 4-Series air bag warnings a serious problem?: They can be. The most common air bag complaint is a "Passenger restraint system malfunction" or "Air Bag Off" warning. Dealers say the air bags may not deploy while it shows. Fixes have included a new seat and mat, a wiring harness, or a control unit.
Which A4 and 4-Series model years should I avoid?: Avoid 2020 and 2018 on both cars, since both are rated among the weakest years. The newest years rank well for each, but they have had less time to collect complaints. For the A4, 2023 is a stronger choice with more history behind it.

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How we score the Audi A4 and BMW 4 Series

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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