Popular concern models like the Golf 6, Passat B7, and fifth Polo were equipped with the 1.6-liter Volkswagen CAYC 1.6 TDI diesel engine, which was manufactured between 2009 and 2015. In Europe, this power unit is highly prevalent.

CAYC, CAAC, CAGA, CAHA, CBAB, CFCA, CFGB, CLCA, CLJA, CKTB, CFHC, and CKUB are also included in the EA189 series.
Specifications
| Production years | 2009-2015 |
| Displacement, cc | 1598 |
| Fuel system | Common Rail |
| Power output, hp | 105 |
| Torque output, Nm | 250 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 79.5 |
| Piston stroke, mm | 80.5 |
| Compression ratio | 16.5 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | VGT |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.3 |
| Fuel type | diesel |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Volkswagen Golf 2011) — city — highway — combined |
5.2 3.6 4.1 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 165 |
The engine was installed on:
- Audi A3 2 (8P) in 2009 – 2013;
- Seat Ibiza 4 (6J) in 2009 – 2015;
- Seat Leon 2 (1P) in 2010 – 2012;
- Skoda Octavia 2 (1Z) in 2009 – 2013;
- Skoda Rapid 1 (NH) in 2012 – 2015;
- Skoda Superb 2 (3T) in 2010 – 2013;
- Skoda Yeti 1 (5L) in 2010 – 2015;
- Volkswagen Golf 6 (5K) in 2009 – 2012;
- Volkswagen Jetta 5 (1K) in 2009 – 2010;
- Volkswagen Passat B7 (36) in 2010 – 2014;
- Volkswagen Polo 5 (6R) in 2009 – 2014.
Disadvantages of the VW CAYC engine
Although this diesel engine is thought to be very dependable, it dislikes poor fuel.
As a result, the majority of his issues have some connection to piezo injector malfunctions.
It frequently presses grease from beneath the plastic valve cover, even in this engine.
Although the timing belt lasts a long time, it needs to be maintained because if it breaks, the valves will be bent.
Additionally, an EGR valve and a particulate filter cause a lot of issues for owners.
