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Audi · Mid-Size · 2019–2024

Audi S7 4K

Weaknesses, engine ratings and buying advice

★★★★★
2.0 / 5.0 · Based on 2 engine variants

Generations

Engine Overview

The Audi S7 4K is available with 2 engine variants — from 340 to 450 hp.

S7 · Benziner Mild-Hybrid· 450 PS
2019 2024
Be Careful 5 weaknesses
Show all weaknesses →
S7 · Diesel Mild-Hybrid· 344–349 PS
2019 2024
Stay Away! 5 weaknesses
Show all weaknesses →

The Audi S7 (Benziner Mild-Hybrid, 450 PS) has the DCTB (2.9L TFSI V6 BiTurbo) — rated: "Be Careful", 5 known weaknesses.

The Audi S7 (Diesel Mild-Hybrid, 344–349 PS) has the DAUB (3.0L TDI V6) — rated: "Stay Away!", 5 known weaknesses.

Vehicle Weaknesses

WeaknessCost
!Air suspension: ride height sensor fault

On the S7 4K, defective ride height sensors in the air suspension are reported, causing system fault messages. Usually individual sensors that need replacing.

Symptoms: 'Air suspension system fault', car does not regulate ride height correctly, level error on start-up
from 60,000 km
Ad Höhensensor Audi S7 4K Luftfahrwerklevel sensor A7 4K front rear
 Medium
!48V mild-hybrid system fault

The 48V mild-hybrid system with belt-driven starter-generator is a potential weak point in the S7 4K. Audi granted a 7-year extended warranty on the BSG, which is telling.

Symptoms: 'Electrical system fault' message, battery warning, no regenerative braking or coasting mode
from 80,000 km
Ad Riemenstartergenerator Audi S7 4K 48VRSG A7 4K
 High
●MMI and driver assistance system faults

S7 4K drivers report sporadic fault messages from driver assistance systems, gearbox faults and drivetrain warnings, particularly at speeds above 180 km/h. Software updates resolve many issues.

Symptoms: Warning messages at high speeds, dashboard faults disappear on their own, occasional system crashes
Ad control unit Audi S7 4KMMI A7 4K Update Softwarestand
 Medium
NHTSA Owner Complaints
Above Average
6 complaints · 2019–2024
Electrical
5
Powertrain
2
Steering
1
Cruise Control
1
Engine
1

Top Reported Issues

⚠ Electrical (5 complaints)
⚠ Powertrain (2 complaints)
⚠ Steering (1 complaints)
Source: NHTSA (nhtsa.gov) · 2026-03

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Known Problems and Issues

A total of 14 weaknesses have been documented for the Audi S7 4K (2019–2024) — 10 engine-related and 4 vehicle-related. One problem engine: DAUB (3.0L TDI V6). Typical issues affect Electronics, Brakes.

What to watch out for with the Audi S7? See the detailed listing of all engine and vehicle weaknesses in the sections above.

Frequently Asked Questions

What problems and weaknesses does the Audi S7 4K have? +
The Audi S7 4K has 10 known engine weaknesses and 4 vehicle weaknesses.
What should I look for when buying a used Audi S7 4K? +
faq.watch_a_avoid
Which engine is recommended? +
Be careful: DCTB (2.9L TFSI V6 BiTurbo). No engine is rated 'Good Choice'. The most fun to drive is the DCTB (2.9L TFSI V6 BiTurbo). Problem engine: DAUB (3.0L TDI V6) — stay away!
Which Audi S7 4K engine is the most fun? +
The {code} ({displacement}) offers the most driving fun in the Audi S7 4K — rated: "Fun to Drive!". {description} Same V6+48V controversy as the S6 C8, wrapped in a Sportback body. The prettier shell can't mask the V8 void. Love the silhouette but need the V8 sound: buy a used C7, not a new C8.
Is the Audi S7 4K worth buying used? +
Caution is advised with the Audi S7 4K — 1 of 2 engine variants are rated 'Stay Away!'. The engine choice is crucial.
What horsepower variants are available for the Audi S7 4K? +
The Audi S7 4K is available with engine variants from 340 to 450 hp. Petrol: DCTB (2.9L TFSI V6 BiTurbo). Diesel: DAUB (3.0L TDI V6).

Last updated: February 2026 · All information without guarantee