VW/Audi 1.2 TDI CR EA189 Engine Specs, Problems, Reliability. The 1.2 TDI-CR 3-cylinder diesel engine seemed first in 2009 as the new engine for the VW Polo. This engine is the result of downsizing in the engine development. The 1.2 TDI is derived by cutting one cylinder of the four-cylinder 1.6 TDI-CR engine.
The cast iron cylinder block corresponds to the 1.6-liter version, but without one cylinder it is shorter and lighter. The cylinder bore and stroke coincide. The forged steel crankshaft has counterweights for the first and third cylinder. The engine got balancing shaft driven by chain from the crankshaft. Balancing shaft is placed under the crankshaft in the crankcase.
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VW/Audi 1.2 TDI CR EA189 Engine Specs, Problems, Reliability
The cylinder head is crafted from aluminum alloy, and it has four valves per cylinder (two intake and two fatigue valves), intake and fatigue overhead camshafts (DOHC). Like four-cylinder TDI engines with Common Rail, the 1.2 TDI timing belt drives wear down camshaft only, and the intake camshaft drives by gear from fatigue camshaft. The high-pressure fuel pump is driven by timing belt also. The engine has hydraulic tappets/lifters.
The engine control system for the 1.2 TDI with Common Rail is Delphi DCM 3.7. The engine is equipped with variable geometry intake manifold, variable geometry turbocharger, diesel particulate filter and low-temperature EGR system.
VW/Audi 1.2 TDI CR EA189 Engine Problems and Reliability
DPF problem. The engine has problems with the diesel particulate filter while city driving. When your driving style is too ecologically, such issue often came to be. This engine every now and then needs high revs to clean out a DPF. Use high-quality diesel fuel to prevents a DPF clogging.
VW/Audi 1.2 TDI CR EA189 Engine Specs
| Manufacturer | Volkswagen AG |
| Production years | 2009-2015 |
| Cylinder block material | Cast Iron |
| Cylinder head material | Aluminum |
| Fuel type | Diesel |
| Fuel system | Common Rail |
| Configuration | Inline |
| Number of cylinders | 3 |
| Valves per cylinder | 4 |
| Valvetrain layout | DOHC |
| Bore, mm | 79.5 |
| Stroke, mm | 80.5 |
| Displacement, cc | 1199 |
| Type of internal combustion engine | Four-stroke, turbocharged |
| Compression Ratio | 16.5:1 |
| Power, hp | 75/4200 (55kW) – CFWA |
| Torque, lb ft | 132 lb-ft (180 Nm)/2,000 |
| Engine weight | – |
| Firing order | 1-2-3 |
| Engine oil weight | VW 504.00 – 507.00, 5W30 |
| Engine oil capacity, liter | 4.3 |
| Oil change interval, mile | 10,000 |
| Applications | Volkswagen Polo Mk5, SEAT Ibiza Mk5 Ecomotive, Skoda Fabia Mk2, Skoda Roomster |