The 3.0-liter turbo V6 Audi DCBD has been produced since 2018 and is installed on the Audi Q7 and Audi Q8. This EA839 engine has direct injection and produces 340 hp and 500 Nm. In plug-in hybrid versions the system output reaches 381-462 hp.
EA839 family: CZSE, DLZA, CWGD, DECA, DECC, DCBD, DWVA, DCBE.
Specifications
| Production years | since 2018 |
| Displacement, cc | 2995 |
| Fuel system | direct injection |
| Power output, hp | 340 |
| Torque output, Nm | 500 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 84.5 |
| Piston stroke, mm | 89 |
| Compression ratio | 11.2 |
| Features | 2 x DOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | at intake and exhaust |
| Turbocharging | TwinScroll |
| Recommended engine oil | 0W-20 |
| Engine oil capacity, liter | 7.6 |
| Fuel type | petrol |
| Euro standards | EURO 6d |
| Fuel consumption, L/100 km (for Audi Q8 55 TFSI quattro 2020) — city — highway — combined |
10.5 7.2 8.4 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 172 |
The engine was installed on:
- Audi Q7 2 (4M) since 2019;
- Audi Q8 1 (4M) since 2018.
Disadvantages of the Audi DCBD engine
- Unlike some predecessors, this engine has cylinder liners and does not suffer from scuffing; rocker arm failures occur only on early engines;
- Like all direct-injection engines, it is prone to carbon deposits on the intake valves;
- Oil and coolant leaks are a frequent complaint;
- The thermostat, water pump and turbocharger bypass valve have a short life.
Frequently asked questions about the Audi DCBD
How much power does the Audi DCBD make?
The Audi DCBD develops 340 hp and 500 Nm of torque.
How much oil does the Audi DCBD take and which one?
Engine oil capacity: 7.6 liters. Recommended oil: 0W-20.
Does the Audi DCBD have a timing belt or chain?
The Audi DCBD uses a timing chain.
Is the Audi DCBD turbocharged?
Yes, the Audi DCBD is turbocharged (TwinScroll).
Does the Audi DCBD need valve clearance adjustment?
No, the Audi DCBD has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi DCBD last?
The typical lifespan of the Audi DCBD is ~250 000 km with proper maintenance.
What is the fuel consumption of the Audi DCBD?
Audi Q8 55 TFSI quattro 2020: city 10.5, highway 7.2, combined 8.4 L/100 km.
What cars was the Audi DCBD installed on?
Audi Q7 2 (4M) since 2019; Audi Q8 1 (4M) since 2018.
What are the common problems of the Audi DCBD?
Unlike some predecessors, this engine has cylinder liners and does not suffer from scuffing; rocker arm failures occur only on early engines. Like all direct-injection engines, it is prone to carbon deposits on the intake valves. All known problems.
