Audi 2.9 TFSI: years, specs & known problems

By CarWhere Research · Updated November 4, 2026

Audi's 2.9 TFSI is a 2,894 cc twin-turbocharged V6 with both turbos inside the vee. It makes 444 hp in the 2018–2025 RS 5 and the 2020–2025 S6 and S7, where it gets a 48-volt mild hybrid system, and 429 hp and 442 lb-ft as the standard engine in the 2027 Q7.

The 2.9 TFSI shares the 84.5 mm bore of the 3.0 TFSI but uses a shorter 86.0 mm stroke for 2,894 cc, a 10.0:1 compression ratio and two turbochargers inside the vee. Audi describes a B-cycle combustion process with centrally mounted direct injectors, a method with a shorter compression phase and a longer expansion phase. It debuted in the 2018 RS 5 Coupe at 444 hp and 443 lb-ft with an eight-speed Tiptronic.

The 2020 S6 and S7 adopted the same 444 hp output with a 48-volt mild hybrid system, and later Audi documents list 442 lb-ft. For 2027 the redesigned Q7 makes a 429 hp version of the 2.9 its standard engine. Check any used car for open recalls by VIN.

2.9 TFSI at a glance

Audi 2.9 TFSI twin-turbocharged 2,894 cc V6 (RS 5, S6, S7, 2027 Q7): model years, fuel and peak Audi-published output by version
Engine	Model years	Fuel	Peak hp	Peak torque (lb-ft)
RS 5 Coupe and Sportback (444 hp)	2018–2025	Gasoline (premium recommended)	444	443
S6 and S7 with 48-volt mild hybrid (444 hp)	2020–2025	Gasoline (premium recommended)	444	443
2027 Q7 (429 hp)	2027–present	Gasoline (premium recommended)	429	442

CarWhere lists 0 documented problems and 0 NHTSA recalls for the 2.9 TFSI, each with a source.

RS 5 Coupe and Sportback (444 hp)

The engine's US debut in the 2018 RS 5 Coupe, followed by the 2019 RS 5 Sportback. Eight-speed Tiptronic and quattro.

RS 5 Coupe and Sportback (444 hp) specifications

RS 5 Coupe and Sportback (444 hp): design facts (2018–2025)
Specification	Value
Displacement	2,894 cc (176.6 cu in)[1]
Bore × stroke	84.5 × 86.0 mm[1]
Compression ratio	10.0:1[1]
Turbochargers	Two, positioned inside the vee[4]
Combustion	B-cycle with centrally mounted direct injectors[4]

RS 5 Coupe and Sportback (444 hp) horsepower and torque by year

RS 5 Coupe and Sportback (444 hp): Audi-published horsepower (hp) and torque (lb-ft) by model year and application
Model years	Application	Horsepower (hp)	Torque (lb-ft)	Source
2018	RS 5 Coupe444 hp at 5,700–6,700 rpm; 443 lb-ft at 1,900–5,000 rpm	444	443	[1]
2021	RS 5 Coupe and Sportback	444	442	[2]
2024	RS 5 Coupe and Sportback	444	442	[3]

"—" means we could not confirm the figure from a primary source.

Which vehicles have the RS 5 Coupe and Sportback (444 hp)?

Models and model years offered with the RS 5 Coupe and Sportback (444 hp)
Model	Model years	Notes
RS 5 Coupe	2018–2025
RS 5 Sportback	2019–2025

S6 and S7 with 48-volt mild hybrid (444 hp)

The C8 S6 and S7 replaced their twin-turbo V8 with the 2.9 TFSI, adding a 48-volt mild hybrid system. Eight-speed Tiptronic.

S6 and S7 with 48-volt mild hybrid (444 hp) specifications

S6 and S7 with 48-volt mild hybrid (444 hp): design facts (2020–2025)
Specification	Value
Bore × stroke	84.6 × 86.0 mm (Audi A6/S6 spec sheet)[5]
Compression ratio	10.0:1[5]
Mild hybrid	48-volt MHEV[5]

S6 and S7 with 48-volt mild hybrid (444 hp) horsepower and torque by year

S6 and S7 with 48-volt mild hybrid (444 hp): Audi-published horsepower (hp) and torque (lb-ft) by model year and application
Model years	Application	Horsepower (hp)	Torque (lb-ft)	Source
2020	S6	444	443	[5]
2020	S7	444	443	[6]
2024	S6 and S7	444	442	[3]

"—" means we could not confirm the figure from a primary source.

Which vehicles have the S6 and S7 with 48-volt mild hybrid (444 hp)?

Models and model years offered with the S6 and S7 with 48-volt mild hybrid (444 hp)
Model	Model years	Notes
S6 sedan	2020–2025
S7	2020–2025

2027 Q7 (429 hp)

The redesigned 2027 Q7 uses a 429 hp, 442 lb-ft version of the 2.9 TFSI as its standard engine, good for 0–60 mph in 4.8 seconds per Audi and 7,700 lb of towing with the optional package.

2027 Q7 (429 hp) specifications

2027 Q7 (429 hp): design facts (2027–present)
Specification	Value
Output	429 hp at 5,500–6,800 rpm; 442 lb-ft at 2,000–4,500 rpm[8]
Towing	Up to 7,700 lb with the optional towing package[7]

2027 Q7 (429 hp) horsepower and torque by year

2027 Q7 (429 hp): Audi-published horsepower (hp) and torque (lb-ft) by model year and application
Model years	Application	Horsepower (hp)	Torque (lb-ft)	Source
2027	Q7	429	442	[7]

"—" means we could not confirm the figure from a primary source.

Which vehicles have the 2027 Q7 (429 hp)?

Models and model years offered with the 2027 Q7 (429 hp)
Model	Model years	Notes
Q7	2027–present

2.9 TFSI issues by model

The same engine shows up on these known-issues pages, with model-specific details.

Audi A5: RS 5 positive battery terminal cover (recall 20V760) (2018–2019)

Related Audi research

Confirm a car really has the 2.9 TFSI.

The engine an Audi left the factory with is part of its build record. The CarWhere Audi build sheet reconstructs factory colors, options and packages from licensed VIN-level build data — availability is checked free, and it is $9.99 only when detailed build data is found for that VIN.

Audi build sheet by VIN

Frequently asked questions

Which Audis have the 2.9 TFSI V6?

In the US: the 2018–2025 RS 5 Coupe, the 2019–2025 RS 5 Sportback, the 2020–2025 S6 and S7, and the 2027 Q7.

Is the Audi 2.9 TFSI the same as the 3.0 TFSI?

No. Both V6s use an 84.5 mm bore, but the 2.9 has a shorter 86.0 mm stroke (2,894 cc), two turbochargers instead of one and a 10.0:1 compression ratio.

How much horsepower does the Audi 2.9 TFSI make?

444 hp in the RS 5, S6 and S7, with 443 lb-ft in early documents and 442 lb-ft in later ones, and 429 hp with 442 lb-ft in the 2027 Q7.

Does the S6 2.9 TFSI have a mild hybrid?

Yes. The 2020-on S6 and S7 pair the 2.9 TFSI with a 48-volt mild hybrid system.

Sources

Ratings are Audi-published figures as cited; descriptions are CarWhere’s own summaries of the sources below. Repair costs appear only where a source states them and vary by shop and region.

2018 Audi RS 5 Coupe press kit (revised Jan. 2018) — Audi of America
2021 Audi RS 5 Coupe and Sportback pricing release — Audi of America
Audi updates 2024 models with new standard features and expanded connected technology (pricing as of Aug. 3, 2023) — Audi of America
All-new 2019 Audi RS 5 Sportback pricing is announced — Audi of America
2020 Audi A6/S6 press kit — Audi of America
2020 Audi A7/S7 press kit — Audi of America
All-new Audi Q7 release (2027 Q7/SQ7) — Audi of America
2027 Audi Q7/SQ7 technical specifications — Audi of America

More Audi tools

Independent reference compiled by CarWhere — not affiliated with or endorsed by AUDI AG or Audi of America. Audi, quattro, TFSI, S tronic, e-tron and the model names are trademarks of their owners.