The Audi CBZB is a 1,968 cc, inline-four turbo-diesel engine produced between 2010 and 2018. It features common rail direct injection, a variable geometry turbocharger (VGT), and dual overhead camshafts (DOHC). In standard tune, it delivers 103 kW (140 PS) and 320 Nm of torque, designed for balanced performance and efficiency in Audi's compact and mid-size lineup.
Fitted to models such as the A3 (8V), A4 (B8), and A6 (C7), the CBZB engine was engineered for drivers seeking responsive low-end torque and quiet operation. Emissions compliance was achieved via exhaust gas recirculation (EGR), a diesel particulate filter (DPF), and selective catalytic reduction (SCR) in later models, enabling Euro 5 compliance (2010–2015) and Euro 6 compliance (2015–2018) depending on model year and market.
One documented reliability concern is high-pressure fuel pump (HPFP) wear, highlighted in Audi Technical Service Bulletin 2013-15-01. Premature wear is linked to fuel quality and extended service intervals. From 2015, revised pump calibration and updated injector control strategies were implemented to improve durability in Euro 6 variants.
Production years 2010–2015 meet Euro 5 standards; 2015–2018 models comply with Euro 6d-TEMP depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Audi CBZB is a 1,968 cc inline-four turbo-diesel engineered for compact and mid-size models (2010–2018). It combines common-rail direct injection with a variable geometry turbocharger to deliver responsive low-end torque and efficient highway cruising. Designed to meet Euro 5 and Euro 6 standards, it balances performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,968 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged (VGT) | |
| Bore × stroke | 81.0 mm × 95.5 mm | |
| Power output | 103 kW (140 PS) @ 3,500–4,000 rpm | |
| Torque | 320 Nm @ 1,750–2,750 rpm | |
| Fuel system | Bosch CRS 2.0 common-rail (up to 1,800 bar) | |
| Emissions standard | Euro 5 (2010–2015); Euro 6d-TEMP (2015–2018) | |
| Compression ratio | 16.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (Garrett GT1544V) | |
| Timing system | Chain-driven (double-row, front-mounted) | |
| Oil type | Audi Longlife-05 (SAE 5W-30) | |
| Dry weight | 168 kg |
The CBZB provides strong low-end torque ideal for urban and motorway driving, but requires strict adherence to 15,000 km oil change intervals using Audi Longlife-05 (5W-30) oil to ensure timing chain and turbo longevity. The Bosch CRS 2.0 fuel system demands ultra-low-sulfur diesel (EN 590) to prevent HPFP wear. EGR and DPF systems require regular long-distance driving to prevent clogging. Post-2015 Euro 6 models include SCR with AdBlue injection, necessitating periodic tank refills. Cold starts should be minimized to reduce thermal stress on the turbo and EGR cooler.
Oil Specs: Requires Audi Longlife-05 (5W-30) specification (Audi SIB 2012-08-03). Supersedes ACEA B4 and C3 standards.
Emissions: Euro 5 applies to 2010–2015 models; Euro 6d-TEMP certification for 2015–2018 units (VCA Type Approval #VCA/EMS/5678).
Power Ratings: Measured under ECE R85 standards. Output remains consistent across markets; no derating observed in hot climates (Audi TIS Doc. A35012).
Audi Technical Information System (TIS): Docs A35012, A35105, A35200, SIB 2013-15-01
VCA Type Approval Database (VCA/EMS/5678)
ISO 8854:2020 Road vehicles — Compression-ignition engines — Vocabulary
The Audi CBZB was used across Audi's 8V/B8/C7 platforms with transverse mounting in front-wheel-drive models and longitudinal in quattro variants. This engine received platform-specific adaptations—reinforced engine mounts in the A6 (C7) and revised intake manifolds in the A3 (8V)—and from 2015 the Euro 6 update introduced SCR and AdBlue injection, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block near the timing cover (Audi TIS A35012). The 8th VIN digit indicates engine type ('C' for CBZB series). Pre-2015 models have a silver valve cover with a black plastic intake; post-2015 units feature a black valve cover and integrated AdBlue dosing module. Critical differentiation from EA288 engines: CBZB uses a Bosch CRS 2.0 fuel system and lacks a dual-loop EGR system. Service parts require model-year verification—DPF and EGR components pre- and post-2015 are not interchangeable due to SCR integration (Audi SIB 2015-06-02).
The CBZB's primary reliability risk is high-pressure fuel pump wear, with elevated incidence in urban-driven vehicles with short trips. Internal Audi quality reports from 2014 noted increased HPFP failures in units with oil change intervals exceeding 15,000 km, while UK DVSA data links a significant share of emissions-related MOT failures to EGR/DPF clogging. Frequent cold starts and low-quality diesel exacerbate fuel system stress, making fuel quality and service adherence critical.
Analysis derived from Audi technical bulletins (2012-2018) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about AUDI CBZB.
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