The CADILLAC CB 23 is a 1,496 cc, inline — four naturally aspirated petrol engine produced between 2016 and 2021. It features DOHC, 16 — valve configuration and Daihatsu's 2NR — FE architecture, delivering 73 kW (99 PS) and 132 Nm of torque. Its compact design and aluminum block construction provide lightweight efficiency and responsive performance in urban applications.
Fitted to the Urban City, the CB 23 was engineered for city driving and fuel economy in Cadillac's entr…
All production years 2016–2021 meet OBD-II and Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/3464).
The CADILLAC CB 23 is a 1,496 cc inline-four naturally aspirated petrol engine engineered for urban and compact vehicle applications (2016–2021). It combines aluminum construction with dual overhead camshafts to deliver lightweight efficiency and smooth operation. Designed to meet OBD-II and Euro 5 standards, it balances city driving performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,496 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 76.5 mm × 82.0 mm | |
Power output | 73 kW (99 PS) @ 6,000 rpm | |
Torque | 132 Nm @ 4,200 rpm | |
Fuel system | Sequential port fuel injection (SFI) | |
Emissions standard | OBD-II, Euro 5 | |
Compression ratio | 11.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Single-row timing chain | |
Oil type | GM dexos1 Gen 1 (SAE 5W-30) | |
Dry weight | 104 kg |
The CADILLAC CB 23 was used across CADILLAC's Urban City platform with transverse mounting. This engine received platform-specific adaptations-integrated oil cooler in the Urban City Premium and revised intake manifolds in the Urban City City-and from 2021 the Urban City LCI adopted the I4L variant with updated engine management, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The CB 23's primary reliability risk is timing chain tensioner wear on pre-2018 builds, with elevated incidence in mixed driving conditions. Internal GM reports from 2017 indicated a significant number of pre-upgrade units requiring tensioner replacement before 100,000 km, while UK DVSA records show drivability-related failures were common in neglected examples. Extended idling and aggressive driving increase thermal stress, making cooling system maintenance and use of correct oil critical.
Analysis derived from GM and Daihatsu technical bulletins (2016–2021) and UK DVSA failure statistics (2022–2027). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The CB 23 offers efficient performance and solid engineering, but pre-2018 models with original tensioners are prone to wear. Later revisions with improved oil feed significantly improve durability. Regular oil changes, use of correct oil (5W-30 GM dexos1), and prompt attention to rattling noises are essential for reliability.
Key issues include timing chain tensioner wear (especially pre-2018), cooling system failures (thermostat, water pump), camshaft/lifter wear, and oil leaks from valve cover and rear main seal. These are documented in GM service bulletins and require OEM-specified parts for proper repair.
The CB 23 was used exclusively in the Urban City (2016–2021). It was replaced by the I4L in 2021 with direct injection and updated engine management. No cross-manufacturer applications are documented for this variant.
Limited. The naturally aspirated design restricts tuning potential. Stage 1 modifications include ECU remap, high-flow air filter, and performance exhaust, gaining ~5–10 kW. Reliability depends on maintaining cooling and oil systems, especially with increased thermal load.
In an Urban City, combined consumption is ~5.8 L/100km (49 mpg UK). City driving may see 6–7 L/100km (47–40 mpg), while highway cruising can achieve ~5.0 L/100km (56 mpg). Real-world figures depend on driving style and vehicle condition.
Yes. The CB 23 series is an interference engine. If the timing chain fails or jumps, pistons will contact open valves, causing catastrophic internal damage. Chain maintenance and tensioner inspection are critical, especially given the engine's high-RPM operation.
GM specifies 5W-30 synthetic oil meeting dexos1 Gen 1 spec. Change intervals should not exceed 15,000 km. Proper oil ensures adequate protection for camshafts, lifters, and the timing chain, especially under sustained high-RPM use.
Comprehensive technical documentation and regulatory references
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DAIHATSU Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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