The Vauxhall X 30 XE is a 2,969 cc, inline‑six naturally aspirated petrol engine produced between 1995 and 2002. It features a DOHC 24‑valve layout, sequential multi‑point fuel injection, and an aluminium block with cast‑iron liners, delivering 147 kW (200 PS) and 280 Nm of torque. Its smooth power delivery and refined character made it a flagship unit for executive applications.
Fitted to models such as the Omega B and Senator—including the 3.0 variants—the X 30 XE was eng…
Production years 1995–2002 meet Euro 2 standards across all markets .
The Vauxhall X 30 XE is a 2,969 cc inline‑six naturally aspirated petrol engineered for executive sedans and coupés (1995–2002). It combines sequential multi‑point fuel injection with a DOHC 24‑valve head to deliver smooth, linear power and refined operation. Designed to meet Euro 2 emissions standards, it prioritises drivability and mechanical balance over high specific output.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,969 cc | |
Fuel type | Petrol (Unleaded, 95 RON min) | |
Configuration | Inline‑6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 86.0 mm × 85.0 mm | |
Power output | 147 kW (200 PS) @ 5,200 rpm | |
Torque | 280 Nm @ 4,000 rpm | |
Fuel system | Bosch Motronic MPI (sequential multi‑point injection) | |
Emissions standard | Euro 2 | |
Compression ratio | 10.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (front‑mounted, maintenance‑free design) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 178 kg |
The Vauxhall X 30 XE was used across Vauxhall's Omega B and Senator platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—revised engine mounts in the Senator for NVH refinement and compact accessory drives in the Omega—and from 1998 the Omega LCI adopted updated PCV hardware, creating minor service part distinctions. All adaptations are documented in OEM technical bulletins.
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The X 30 XE's primary reliability risk is oil sludge accumulation in early builds, with elevated incidence in vehicles with extended oil change intervals or frequent short trips. Vauxhall internal data from 2000 indicated a measurable increase in warranty claims for bearing wear before 120,000 km, while UK DVLA records show no significant emissions-related MOT failures linked to this engine. Oil maintenance and driving pattern make sludge prevention critical.
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 X 30 XE is smooth and refined, but early models (1995–1997) had oil sludge concerns due to PCV limitations. Post-1998 revisions improved ventilation. With timely oil changes every 10,000 km and avoidance of short trips, well-maintained examples can exceed 200,000 km without major issues.
The most frequent issues are oil sludge buildup (especially in pre-1998 units), timing chain tensioner wear, EGR valve clogging, and oil leaks from aged gaskets. These are documented in Vauxhall service bulletins, particularly SIB 05 018.
This 3.0L petrol engine was used in the Omega B (1995–2002) and Senator (1995–1999). All variants are badged '3.0' and comply with Euro 2 emissions standards throughout production.
Aftermarket ECU tuning is common on the X-30-XE platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Typical for a 3.0L inline-six of its era. In an Omega 3.0, consumption is ~12.5 L/100km (city) and ~7.8 L/100km (highway), or about 28 mpg UK combined. Real-world mixed driving usually returns 25–30 mpg (UK), depending on driving style and vehicle condition.
Yes. The X 30 XE is an interference engine. If the timing chain fails (though rare due to robust design), piston-to-valve contact can cause catastrophic damage. However, the chain is designed as maintenance-free and rarely fails if oil is changed regularly.
Vauxhall originally specified API SG/SH or ACEA A2 (SAE 10W-40) mineral or semi-synthetic oil. Modern ACEA A3/B4 10W-40 oils are acceptable. Always change oil every 10,000 km or 12 months—whichever comes first.
Comprehensive technical documentation and regulatory references
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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.
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