Audi AAE
The main problems for owners are caused by malfunctions in the Mono-Motronic system.
Audi A6 engines
The Audi A6 is a family of business class cars manufactured by the AUDI AG in Germany. Until 1994, the car was named Audi 100. Its production began in 1968. Today, the A6 is produced in a five-seat 4-door sedan and a 5-door station wagon. Previously, two-door models, hatchbacks and coupes were also released. In 2005, the A6 took the leading position in the German business car market and became the best-selling model in Europe.
The Audi A6 was offered with 52 engines since 1994 (28 petrol, 24 diesel). Displacement ranges from 1.8 to 4.2 liters, power output from 90 to 350 hp. 28 use a timing chain and 37 a timing belt. 34 are turbocharged. The longest rated lifespan belongs to the Audi AAT (about 550,000 km).
Audi A6 engines by generation
| Engine | Years | Volume | Power | Fuel | Timing | Oil | Lifespan |
|---|---|---|---|---|---|---|---|
| Audi A6 C4 (4A) 1994–1997 | |||||||
| Audi AEL | 1994–1997 | 2.5 L R5 | 140 hp | diesel, turbo | belt | 5.2 L | ~450,000 km |
| Audi AAT | 1994–1997 | 2.5 L R5 | 115 hp | diesel, turbo | belt | 5.2 L | ~550,000 km |
| Volkswagen 1Z | 1994–1996 | 1.9 L R4 | 90 hp | diesel, turbo | belt | 4.3 L | ~450,000 km |
| Audi AAH | 1994–1997 | 2.8 L V6 | 174 hp | petrol | belt | 5 L | ~350,000 km |
| Audi ABC | 1994–1997 | 2.6 L V6 | 150 hp | petrol | belt | 5 L | ~400,000 km |
| Audi AAR | 1994–1996 | 2.3 L R5 | 133 hp | petrol | belt | 4.5 L | ~350,000 km |
| Audi ACE | 1994–1997 | 2.0 L R4 | 140 hp | petrol | chain + belt | 3 L | ~360,000 km |
| Audi ABK | 1994–1996 | 2.0 L R4 | 115 hp | petrol | belt | 3 L | ~350,000 km |
| Audi AAE | 1994–1996 | 2.0 L R4 | 101 hp | petrol | belt | 3 L | ~300,000 km |
| Audi ACK | 1995–1997 | 2.8 L V6 | 193 hp | petrol | chain + belt | 5.5 L | ~330,000 km |
| Audi ADR | 1995–1997 | 1.8 L R4 | 125 hp | petrol | chain + belt | 4.5 L | ~330,000 km |
| Volkswagen AHU | 1996–1997 | 1.9 L R4 | 90 hp | diesel, turbo | belt | 4.3 L | ~430,000 km |
| Audi A6 C5 (4B) 1997–2005 | |||||||
| Audi AFB | 1997–1999 | 2.5 L V6 | 150 hp | diesel, turbo | belt | 6 L | ~250,000 km |
| Volkswagen AFN | 1997–1999 | 1.9 L R4 | 110 hp | diesel, turbo | belt | 4.3 L | ~400,000 km |
| Audi ALG | 1997–1999 | 2.8 L V6 | 193 hp | petrol | chain + belt | 6 L | ~340,000 km |
| Audi ACK | 1997–1998 | 2.8 L V6 | 193 hp | petrol | chain + belt | 5.5 L | ~330,000 km |
| Audi ALF | 1997–2000 | 2.4 L V6 | 165 hp | petrol | chain + belt | 6 L | ~330,000 km |
| Volkswagen AEB | 1997–1999 | 1.8 L R4 | 150 hp | petrol, turbo | chain + belt | 3.7 L | ~330,000 km |
| Audi AJM | 1998–2001 | 1.9 L R4 | 115 hp | diesel, turbo | belt | 3.6 L | ~300,000 km |
| Volkswagen AKN | 1999–2001 | 2.5 L V6 | 150 hp | diesel, turbo | belt | 6 L | ~260,000 km |
| Audi AKE | 1999–2005 | 2.5 L V6 | 180 hp | diesel, turbo | belt | 6 L | ~240,000 km |
| Audi AVG | 1999–2001 | 1.9 L R4 | 110 hp | diesel, turbo | belt | 4.3 L | ~420,000 km |
| Audi ANB | 1999–2000 | 1.8 L R4 | 150 hp | petrol, turbo | chain + belt | 3.7 L | ~340,000 km |
| Audi ARE | 2000–2005 | 2.7 L V6 | 250 hp | petrol, turbo | chain + belt | 6.5 L | ~200,000 km |
| Volkswagen AWT | 2000–2005 | 1.8 L R4 | 150 hp | petrol, turbo | chain + belt | 3.7 L | ~300,000 km |
| Audi ALT | 2001–2005 | 2.0 L R4 | 130 hp | petrol | chain + belt | 4.2 L | ~300,000 km |
| Audi AYM | 2001–2002 | 2.5 L V6 | 155 hp | diesel, turbo | belt | 6 L | ~270,000 km |
| Volkswagen AVF | 2001–2005 | 1.9 L R4 | 130 hp | diesel, turbo | belt | 3.6 L | ~310,000 km |
| Audi ASN | 2001–2005 | 3.0 L V6 | 220 hp | petrol | chain + belt | 6.3 L | ~350,000 km |
| Audi BBJ | 2001–2005 | 3.0 L V6 | 218 hp | petrol | chain + belt | 6.5 L | ~380,000 km |
| Audi BDV | 2001–2005 | 2.4 L V6 | 170 hp | petrol | chain + belt | 6 L | ~350,000 km |
| Audi BDG | 2003–2004 | 2.5 L V6 | 163 hp | diesel, turbo | belt | 6 L | ~320,000 km |
| Audi BAU | 2003–2005 | 2.5 L V6 | 180 hp | diesel, turbo | belt | 6 L | ~300,000 km |
| Volkswagen BDH | 2004–2005 | 2.5 L V6 | 180 hp | diesel, turbo | belt | 6 L | ~320,000 km |
| Audi A6 C5 Allroad (4BH) 2000–2005 | |||||||
| Audi ARE | 2000–2005 | 2.7 L V6 | 250 hp | petrol, turbo | chain + belt | 6.5 L | ~200,000 km |
| Audi A6 C6 (4F) 2001–2011 | |||||||
| Audi AWX | 2001–2005 | 1.9 L R4 | 130 hp | diesel, turbo | belt | 3.8 L | ~300,000 km |
| Audi BMK | 2004–2006 | 3.0 L V6 | 224 hp | diesel, turbo | chain | 8.2 L | ~340,000 km |
| Audi BPP | 2004–2008 | 2.7 L V6 | 180 hp | diesel, turbo | chain | 8.2 L | ~350,000 km |
| Audi BRE | 2004–2008 | 2.0 L R4 | 140 hp | diesel, turbo | belt | 4.3 L | ~275,000 km |
| Audi AUK | 2004–2008 | 3.1 L V6 | 256 hp | petrol | chain | 6.5 L | ~260,000 km |
| Audi BDW | 2004–2008 | 2.4 L V6 | 177 hp | petrol | chain | 6.5 L | ~280,000 km |
| Audi BBJ | 2004–2008 | 3.0 L V6 | 218 hp | petrol | chain + belt | 6.5 L | ~380,000 km |
| Audi ASB | 2006–2008 | 3.0 L V6 | 233 hp | diesel, turbo | chain | 8.2 L | ~330,000 km |
| Audi BDX | 2006–2008 | 2.8 L V6 | 210 hp | petrol | chain | 6.2 L | ~250,000 km |
| Audi BVJ | 2006–2010 | 4.2 L V8 | 350 hp | petrol | chain | 9.1 L | ~260,000 km |
| Audi CAHA | 2008–2011 | 2.0 L R4 | 170 hp | diesel, turbo | belt | 4.6 L | ~330,000 km |
| Audi CAJA | 2008–2011 | 3.0 L V6 | 290 hp | petrol, turbo | chain | 6.5 L | ~250,000 km |
| Audi A6 C7 (4G) 2010–2017 | |||||||
| Audi CDUD | 2010–2014 | 3.0 L V6 | 245 hp | diesel, turbo | chain | 8 L | ~300,000 km |
| Audi CDUC | 2010–2014 | 3.0 L V6 | 245 hp | diesel, turbo | chain | 8 L | ~320,000 km |
| Audi CGWB | 2010–2012 | 3.0 L V6 | 300 hp | petrol, turbo | chain | 6.5 L | ~260,000 km |
| Audi CAEB | 2011–2013 | 2.0 L R4 | 211 hp | petrol, turbo | chain | 4.6 L | ~240,000 km |
| Audi CDNB | 2011–2014 | 2.0 L R4 | 180 hp | petrol, turbo | chain | 4.6 L | ~260,000 km |
| Audi CREC | 2014–2017 | 3.0 L V6 | 333 hp | petrol, turbo | chain | 6.8 L | ~250,000 km |
| Audi A6 C8 (4K) 2018–present | |||||||
| Audi DFBA | 2018–present | 2.0 L R4 | 204 hp | diesel, turbo | belt | 6 L | ~320,000 km |
| Audi DLZA | 2018–present | 3.0 L V6 | 340 hp | petrol, turbo | chain | 7 L | ~270,000 km |
Audi A6 engine FAQ
What engines were used in the Audi A6?
Audi A6 C4 (4A) (1994–1997): Audi AEL, Audi AAT, Volkswagen 1Z, Audi AAH, Audi ABC, Audi AAR, Audi ACE, Audi ABK, Audi AAE, Audi ACK, Audi ADR and Volkswagen AHU; Audi A6 C5 (4B) (1997–2005): Audi AFB, Volkswagen AFN, Audi ALG, Audi ACK, Audi ALF, Volkswagen AEB, Audi AJM, Volkswagen AKN, Audi AKE, Audi AVG, Audi ANB, Audi ARE, Volkswagen AWT, Audi ALT, Audi AYM, Volkswagen AVF, Audi ASN, Audi BBJ, Audi BDV, Audi BDG, Audi BAU and Volkswagen BDH; Audi A6 C5 Allroad (4BH) (2000–2005): Audi ARE; Audi A6 C6 (4F) (2001–2011): Audi AWX, Audi BMK, Audi BPP, Audi BRE, Audi AUK, Audi BDW, Audi BBJ, Audi ASB, Audi BDX, Audi BVJ, Audi CAHA and Audi CAJA; Audi A6 C7 (4G) (2010–2017): Audi CDUD, Audi CDUC, Audi CGWB, Audi CAEB, Audi CDNB and Audi CREC; Audi A6 C8 (4K) (2018–present): Audi DFBA and Audi DLZA.
Which Audi A6 engine is the most durable?
By rated service life the most durable Audi A6 engines are: Audi AAT — about 550,000 km; Audi AEL — about 450,000 km; Volkswagen 1Z — about 450,000 km. Actual lifespan depends heavily on maintenance and oil change intervals.
How much oil does the Audi A6 engine take?
Engine oil capacity with filter: Audi AAE — 3 L (5W-30); Audi AAH — 5 L (5W-30); Audi AAR — 4.5 L (5W-40); Audi AAT — 5.2 L (5W-40); Audi ABC — 5 L (5W-30, 5W-40); Audi ABK — 3 L (5W-30); Audi ACE — 3 L (5W-30); Audi ACK — 5.5 L (5W-30); Audi ADR — 4.5 L (5W-30); Audi AEL — 5.2 L (5W-40); Audi AFB — 6 L (5W-30); Audi AJM — 3.6 L (5W-40); Audi AKE — 6 L (5W-30); Audi ALF — 6 L (5W-30); Audi ALG — 6 L (5W-30); Audi ALT — 4.2 L (5W-30); Audi ANB — 3.7 L (5W-30); Audi ARE — 6.5 L (5W-40); Audi ASB — 8.2 L (5W-30); Audi ASN — 6.3 L (5W-30); Audi AUK — 6.5 L (5W-30); Audi AVG — 4.3 L (5W-40); Audi AWX — 3.8 L (5W-40); Audi AYM — 6 L (5W-30); Audi BAU — 6 L (5W-30); Audi BBJ — 6.5 L (5W-30); Audi BDG — 6 L (5W-30); Audi BDV — 6 L (5W-30); Audi BDW — 6.5 L (5W-30); Audi BDX — 6.2 L (5W-30); Audi BMK — 8.2 L (5W-30); Audi BPP — 8.2 L (5W-30); Audi BRE — 4.3 L (5W-30); Audi BVJ — 9.1 L (5W-30); Audi CAEB — 4.6 L (5W-30); Audi CAHA — 4.6 L (5W-30); Audi CAJA — 6.5 L (5W-30); Audi CDNB — 4.6 L (5W-30); Audi CDUC — 8 L (5W-30); Audi CDUD — 8 L (5W-30); Audi CGWB — 6.5 L (5W-30); Audi CREC — 6.8 L (5W-30); Audi DFBA — 6 L (5W-30); Audi DLZA — 7 L (0W-20); Volkswagen 1Z — 4.3 L (5W-40); Volkswagen AEB — 3.7 L (5W-30); Volkswagen AFN — 4.3 L (5W-40); Volkswagen AHU — 4.3 L (5W-40); Volkswagen AKN — 6 L (5W-30); Volkswagen AVF — 3.6 L (5W-40); Volkswagen AWT — 3.7 L (5W-30); Volkswagen BDH — 6 L (5W-30).
Does the Audi A6 have a timing belt or chain?
Timing chain: Audi ACE, Audi ACK, Audi ADR, Audi ALF, Audi ALG, Audi ALT, Audi ANB, Audi ARE, Audi ASB, Audi ASN, Audi AUK, Audi BBJ, Audi BDV, Audi BDW, Audi BDX, Audi BMK, Audi BPP, Audi BVJ, Audi CAEB, Audi CAJA, Audi CDNB, Audi CDUC, Audi CDUD, Audi CGWB, Audi CREC, Audi DLZA, Volkswagen AEB and Volkswagen AWT; timing belt: Audi AAE, Audi AAH, Audi AAR, Audi AAT, Audi ABC, Audi ABK, Audi ACE, Audi ACK, Audi ADR, Audi AEL, Audi AFB, Audi AJM, Audi AKE, Audi ALF, Audi ALG, Audi ALT, Audi ANB, Audi ARE, Audi ASN, Audi AVG, Audi AWX, Audi AYM, Audi BAU, Audi BBJ, Audi BDG, Audi BDV, Audi BRE, Audi CAHA, Audi DFBA, Volkswagen 1Z, Volkswagen AEB, Volkswagen AFN, Volkswagen AHU, Volkswagen AKN, Volkswagen AVF, Volkswagen AWT and Volkswagen BDH. Belts must be replaced on schedule: on many engines a broken belt bends the valves.
Was the Audi A6 available with a diesel engine?
Yes: Audi AAT, Audi AEL, Audi AFB, Audi AJM, Audi AKE, Audi ASB, Audi AVG, Audi AWX, Audi AYM, Audi BAU, Audi BDG, Audi BMK, Audi BPP, Audi BRE, Audi CAHA, Audi CDUC, Audi CDUD, Audi DFBA, Volkswagen 1Z, Volkswagen AFN, Volkswagen AHU, Volkswagen AKN, Volkswagen AVF and Volkswagen BDH.
Engine details
Audi AAH
The main complaints of car owners with such an engine are related to oil consumption.
Audi AAR
The main engine problems are related to the vagaries of the KE-III-Jetronic injection system.
Audi AAT
One of the most reliable diesel engines of its time rarely worries its owners.
Audi ABK
This motor is rightfully considered one of the most reliable in the class and rarely breaks down.
Volkswagen 1Z
This is a very reliable motor and breakdowns happen only at very high mileage.
Audi ABC
Most of the complaints on specialized forums are related to progressive oil consumption. Consumption appears closer to 200,000 km after the wear…
Audi ACE
All the most common engine problems are related to the KE-Motronic system.
Audi ADR
The most problems are caused by the chain tensioner, which is also the phase regulator.
Audi AEL
This diesel engine is considered reliable and most of its problems are due to old age.
Audi ACK
This power unit is prone to oil and antifreeze leaks, especially after overheating.
Volkswagen AEB
Very often the turbine fails due to coking of the lubricant in its supply tube.
Volkswagen AFN
This engine is very reliable and the problems described below happen on a big run.
Volkswagen AHU
Most of the complaints are about dips in traction due to contamination of the turbine valve or EGR.
Audi AFB
The most famous problem is the rapid wear of the camshaft cams and rockers.
Audi ALF
These engines are quite reliable, the main problems for owners are leaks.
Audi ALG
Most often, owners complain about lubricant and antifreeze leaks, especially after overheating.
Audi AJM
This diesel engine does not tolerate low-quality oil and its resource depends on the quality of the lubricant.
Audi AKE
Most often, owners complain about the rapid wear of the camshaft cams and rockers.
Audi ANB
Due to coking of oil in its supply pipe, the turbine often fails here.
Audi AVG
The cause of thrust failures is most often pollution and wedge geometry of the turbine.
Volkswagen AKN
Most of the complaints are related to the rapid wear of the camshaft cams or rockers.
Audi ALT
First of all, this engine is known for its impressive oil consumption.
Audi ARE
First of all, this is a very heat loaded motor, so keep an eye on cooling.
Audi ASN
The motor is aluminum, but it is sleeved from the factory and it does not have frequent problems with scuffing.
Audi AWX
This is a very reliable motor, but it does not tolerate the use of low-quality lubrication.
Audi BBJ
The aluminum block is sleeved from the factory and the problem with scuffing is not acute here.
Volkswagen AVF
This very reliable diesel unit is quite picky about the quality of the lubricant.
Volkswagen AWT
The turbine often fails due to oil coking or a clogged catalyst.
Audi AYM
First of all, it is worth noting the very rapid wear of the camshaft cams and rockers.
Audi BDV
The main complaints of car owners with this engine are related to oil and antifreeze leaks.
Audi ASB
Intake manifold flaps are afraid of pollution and can jam up to 100,000 km.
Audi BAU
Most engine problems are related to failures of the electronically controlled injection pump VP44.
Audi BDG
All the most common problems of this diesel engine are associated with failures of the VP44 injection pump.
Audi AUK
The most widespread problem of units of this series are seizures in the cylinders.
Audi BDW
The main complaints about this unit are somehow related to seizures in the cylinders.
Audi BMK
Even at low mileage, swirl flaps were often wedged in the intake manifold.
Audi BPP
The intake manifold flaps serve the least, they are often changed up to 100,000 km.
Audi BRE
The most famous problem of this diesel engine is the rapid wear of the hexagon of the oil pump.
Volkswagen BDH
Most of the problems for owners are caused by malfunctions in the capricious VP44 injection pump.
Audi BDX
The most famous problem with such engines is the formation of scuffing in the cylinders.
Audi BVJ
This engine often consumes oil and the main reason is seizures in the cylinders.
Audi CAEB
Due to an unsuccessful piston group, the engine is famous for its very high oil consumption.
Audi CAHA
From low-quality fuel, capricious piezo injectors quickly fail here.
Audi CAJA
The most famous problem of the motor is the oil burner due to scuffing in the cylinders.
Audi CDNB
Most of the owners' complaints about this engine relate to high oil consumption.
Audi CDUC
The sophisticated CR Bosch system with piezo injectors does not tolerate bad fuel.
Audi CDUD
The most frequent engine breakdowns are associated with the vagaries of the CR system with piezo injectors.
Audi CGWB
The main problem of all units of this series is increased oil consumption.
Audi CREC
The use of new cast-iron sleeves reduced the problem with scuffing to almost nothing.
Audi DFBA
On specialized forums, they sometimes complain about oil leaks from under the valve cover.
Audi DLZA
Since this turbo engine has recently begun to be installed, there are no statistics on its breakdowns.
Models with the same engines
- Audi A4 35 shared engines
- Volkswagen Passat 19 shared engines
- Audi 100 7 shared engines
- Audi 80 5 shared engines
- Skoda Superb 5 shared engines
- Volkswagen Golf 4 shared engines
- Volkswagen Jetta/Bora/Vento 4 shared engines
- Seat Cordoba 3 shared engines
- Seat Ibiza 3 shared engines
- Seat Toledo 3 shared engines