Audi A5/A4/Q5 2.0tfsi CDN engine
R42,500.00
The Audi CDN (often referred to as CDNC or CDNB depending on the power output) is a 2.0-litre turbocharged inline-four petrol engine from the EA888 Gen 2 family. Introduced around 2008, it was a staple in Audi’s longitudinal engine lineup for over half a decade.
Key Specifications
The CDN engine is known for its chain-driven timing system and Audi’s Valvelift System (AVS) on the exhaust side, which helps optimize torque and efficiency.
| Feature | Specification |
|---|---|
| Displacement | 1,984 cc (2.0L) |
| Configuration | Inline-4, DOHC, 16-Valve |
| Power (CDNB) | 180 hp (132 kW) @ 4,000–6,000 rpm |
| Power (CDNC) | 211 hp (155 kW) @ 4,300–6,000 rpm |
| Max Torque | 320–350 Nm @ 1,500–4,200 rpm |
| Fuel System | TFSI Direct Injection |
| Aspiration | Turbocharged (BorgWarner K03) |
| Timing | Timing Chain |
Vehicle Applications
The CDN series was primarily used in Audi’s longitudinal platforms between 2008 and 2015.
- Audi A4 (B8): The most common application for both 180hp and 211hp variants.
- Audi A5 (8T): Widely used in Sportback, Coupe, and Cabriolet models.
- Audi Q5 (8R): Found in early 2.0 TFSI quattro models.
- Audi A6 (C7): Utilised in entry-level 2.0 TFSI variants.
Reliability and Critical Issues
While smooth and powerful, the CDN (EA888 Gen 2) is notorious for several high-cost mechanical flaws.
- Excessive Oil Consumption: Due to faulty piston ring design, many CDN engines consume over 1 litre of oil every 1,000 km. This often requires a full engine rebuild with revised pistons and rings to resolve permanently.
- Timing Chain Tensioner Failure: Early versions of the tensioner are prone to failing, causing the chain to skip and leading to catastrophic valve-to-piston contact. Proactive replacement with the revised “Gen 3” tensioner is highly recommended.
- Water Pump Failures: The plastic water pump housing is known to leak or crack prematurely.
- Carbon Buildup: Like all TFSI engines, carbon deposits on intake valves can lead to rough idling, misfires, and reduced performance, typically requiring walnut blasting every 80,000–100,000 km.