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2019 Audi A4: common problems

Owners of the 2019 Audi A4 filed 5 complaints with NHTSA, most often about electrical system and forward collision avoidance. The maker issued 848 service bulletins for this year. Details by component below, with sources.

Key figures

Owner complaints
5
Technical service bulletins (TSB)
848
Audi A4 2019: 3D model with the “Electrical system” area highlighted — the most complained-about component
Yellow marks the “Electrical system” area, the component owners complain about most for this year. Illustrative only. 3D model: Tomaso, CC Attribution.

What fails most often

654321
  1. 1 Electrical system 40% of all complaints
  2. 2 Forward collision avoidance 40% of all complaints
  3. 3 Engine 20% of all complaints
  4. 4 Air bags 20% of all complaints
  5. 5 Fuel/propulsion system 20% of all complaints
  6. 6 Backover prevention 20% of all complaints
Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Engines and transmissions

US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.

Drive: FWD, AWD

Symptoms owners describe

How many of the 5 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

Components owners complain about

ComponentOwner complaintsinvolving a crashTechnical service bulletins (TSB)
Electrical system20236
Forward collision avoidance204
Engine1029
Air bags1010
Fuel/propulsion system108
Backover prevention105
Equipment00219
Structure0079
Steering0052
Powertrain0050
Engine and cooling0044
Suspension0044
Service brakes0042
Visibility0040

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

Comparison

By complaint count this model year ranks 1,688 of 2,102 model years in the NHTSA data (among the 20% least complained about).

On average one model year of the A4 has 16 complaints (11 years in the data). This year has 5, below average.

What to check before buying

Manufacturer service bulletins

Bulletin titles as filed with NHTSA.

NHTSA lists 848 bulletins for this year; the 12 newest are shown here.

Other years of this model

Questions and answers

What are the most common problems with the 2019 Audi A4?

Owner complaints to NHTSA most often mention: electrical system, forward collision avoidance, engine. Total complaints: 5. The most frequent symptoms in complaint texts: airbag warning light (20%), warning lights, check engine (20%).

How many service bulletins (TSB) were issued for the 2019 Audi A4?

NHTSA lists 848 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.

Should I buy a 2019 Audi A4 from a US auction?

Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.

Other 2019 models

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.