The group’s well-known compact models, including the Astra, Corsa, and Meriva, were equipped with the 1.7-liter Opel Y17DT or LR6 diesel engine, which was manufactured between 2000 and 2005. This device was essentially an adaptation of the well-known Isuzu 4EE2 diesel engine from Japan.

The engines Y20DTH, Y22DTH, and Y22DTR are also members of the Y family.
The engine was mounted on:
- Opel Astra G (T98) in 2000 – 2004;
- Opel Combo C (F06) in 2002 – 2004;
- Opel Corsa C (X01) in 2000 – 2003;
- Opel Meriva A (X03) in 2003 – 2005.
Specifications
| Production years | 2000-2005 |
| Displacement, cc | 1686 |
| Fuel system | direct injection |
| Power output, hp | 75 |
| Torque output, Nm | 165 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 79 |
| Piston stroke, mm | 86 |
| Compression ratio | 18.4 |
| Features | intercooler |
| Hydraulic lifters | no |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | Mitsubishi TD025 |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 4.5 |
| Fuel type | diesel |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Opel Astra 2003) — city — highway — combined |
6.1 4.0 4.8 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 150 |
Disadvantages of the Y17DT engine
The majority of issues are caused by the erratic Denso injection pump control unit;frequently, engine malfunctions are caused by the wiring harness rather than the control unit;
Injection advance or dosing valves in the pump itself frequently leak;
Additionally, there are two reasons why oil frequently gets into the cooling system:
First, there is a leak in the heat exchanger; second, there is a leak in the glasses that contain the nozzles.
