The Vauxhall B28NER is a 2,792 cc, inline‑six naturally aspirated petrol engine produced between 2006 and 2012. It features a dual overhead camshaft (DOHC) 24‑valve layout with sequential multi‑point fuel injection. In standard form it delivered 150 kW (204 PS) at 6,200 rpm and 270 Nm of torque at 3,800 rpm, providing smooth, refined power ideal for executive sedans and performance coupés.
Fitted to models such as the Omega B and Signum—including the 2.8 Elite and 2.8 Spor…
All production years 2006–2012 meet Euro 4 standards .
The Vauxhall B28NER is a 2,792 cc inline‑six naturally aspirated petrol engine engineered for executive sedans and premium MPVs (2006–2012). It combines DOHC 24‑valve architecture with sequential multi‑point fuel injection to deliver smooth, linear power and refined cruising. Designed to meet Euro 4 emissions standards, it prioritizes drivability and acoustic comfort.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,792 cc | |
Fuel type | Petrol (Unleaded) | |
Configuration | Inline‑6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 86.0 mm × 80.0 mm | |
Power output | 150 kW (204 PS) @ 6,200 rpm | |
Torque | 270 Nm @ 3,800 rpm | |
Fuel system | Sequential multi‑point injection (Bosch Motronic ME7.4) | |
Emissions standard | Euro 4 | |
Compression ratio | 10.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain‑driven DOHC | |
Oil type | Vauxhall GM‑LL‑A‑025 (SAE 5W‑30) | |
Dry weight | 168 kg |
The Vauxhall B28NER was used across Vauxhall's Omega B and Z32 platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Signum and modified exhaust manifolding in the Omega B—and from 2009 the facelifted Signum models retained the same engine code but updated ECU calibrations for improved emissions control, creating minor software interchange limits. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 B28NER is generally dependable with proper maintenance, but early hydraulic lash adjuster wear can occur in high-mileage examples with infrequent oil changes. Using GM‑LL‑A‑025 oil and adhering to 10,000 km service intervals greatly reduces risk. Well-maintained units often exceed 200,000 km without major issues.
Hydraulic lash adjuster wear is the most serious issue, followed by throttle body carbon buildup, coolant sensor drift, and cam cover oil leaks. These are documented in Vauxhall TSBs and commonly observed in UK MOT failure data. Regular servicing mitigates most concerns.
The B28NER powered the Omega B (2006–2010) and Signum (2006–2012) in 2.8 Elite and Sport trims. It was exclusive to Vauxhall/Opel and not licensed to other manufacturers. All variants meet Euro 4 emissions.
Modest gains are possible via ECU remap (+10–15 kW) and induction/exhaust upgrades, but the engine lacks forced induction. Significant tuning is limited by the stock internals and fuel system. Most owners prioritize refinement over performance due to the engine’s executive character.
In a Signum 2.8, expect ~11.2 L/100km (city) and ~7.4 L/100km (highway), or about 29 mpg UK combined. Real-world mixed driving typically yields 26–32 mpg (UK), depending on condition and driving style. Economy is moderate for its displacement and era.
Yes. The B28NER is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause severe internal damage. However, the chain is robust and rarely fails if maintained; no widespread timing-related failures are documented.
Vauxhall specifies SAE 5W‑30 synthetic oil meeting GM‑LL‑A‑025. Always use a quality oil and change every 10,000 km or 12 months to protect the valve train and maintain engine longevity.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
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
Type-approval guidance and documentation.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.