The 2.5-liter Volkswagen BAC 2.5 TDI diesel engine was produced from 2003 to 2006 and was installed on the first generation of the Touareg GP SUV before restyling. This diesel engine has become infamous due to the shedding of the coating of the cylinder walls.
EA153 family: AAB, AJT, ACV, AXG, BAC, BPE, AXD, AXE, AJS, AYH.
Specifications
| Production years | 2003-2006 |
| Displacement, cc | 2460 |
| Fuel system | unit-injectors |
| Power output, hp | 174 |
| Torque output, Nm | 400 |
| Cylinder block | aluminum R5 |
| Block head | aluminum 10v |
| Cylinder bore, mm | 81 |
| Piston stroke, mm | 95.5 |
| Compression ratio | 18.0 |
| Features | SOHC |
| Hydraulic lifters | yes |
| Timing drive | gears |
| Phase regulator | no |
| Turbocharging | yes |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 8.9 |
| Fuel type | diesel |
| Euro standards | EURO 3/4 |
| Fuel consumption, L/100 km (for VW Touareg 2005) — city — highway — combined |
12.4 7.4 9.2 |
| Engine lifespan, km | ~300 000 |
The engine was installed on:
- Volkswagen Touareg 1 (7L) in 2003 – 2006.
Disadvantages of the VW BAC engine
- The aluminum block here is without liners, and the coating of the cylinder walls is prone to shedding;
- The unit-injectors and the tandem pump by 150,000 km already often leak through the seals;
- Closer to 200,000 km of run, wear of rockers, camshaft cams is common;
- The intake manifold is also not very reliable, it simply cracks;
- Also, oil can be mixed with antifreeze due to a leak in the pump and heat exchanger.
Frequently asked questions about the Volkswagen BAC
How much power does the Volkswagen BAC make?
The Volkswagen BAC develops 174 hp and 400 Nm of torque.
How much oil does the Volkswagen BAC take and which one?
Engine oil capacity: 8.9 liters. Recommended oil: 5W-30.
Does the Volkswagen BAC have a timing belt or chain?
Timing drive of the Volkswagen BAC: gears.
Is the Volkswagen BAC turbocharged?
Yes, the Volkswagen BAC is turbocharged.
Does the Volkswagen BAC need valve clearance adjustment?
No, the Volkswagen BAC has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Volkswagen BAC last?
The typical lifespan of the Volkswagen BAC is ~300 000 km with proper maintenance.
What is the fuel consumption of the Volkswagen BAC?
VW Touareg 2005: city 12.4, highway 7.4, combined 9.2 L/100 km.
What cars was the Volkswagen BAC installed on?
Volkswagen Touareg 1 (7L) in 2003 - 2006.
What are the common problems of the Volkswagen BAC?
The aluminum block here is without liners, and the coating of the cylinder walls is prone to shedding. The unit-injectors and the tandem pump by 150,000 km already often leak through the seals. All known problems.
