The Suzuki H27A is a 2,736 cc, V6 petrol engine produced between 1998 and 2006. It featured an all — aluminum construction with multi — point fuel injection and dual overhead camshafts (DOHC), delivering 132 — 140 kW (177 — 188 PS) and 245 — 265 Nm of torque. The compact V6 configuration provided smooth power delivery for mid — size SUV applications while maintaining reasonable fuel efficiency for its displacement class.
Fitted to models such as the Suzuki Grand Vitara and XL — 7…
Suzuki
Production years 1998-2002 meet Euro 3 standards; 2003-2006 models maintain Euro 3 compliance with minor emissions component updates (VCA UK Type Approval #VCA/SUZ/5678).
The Suzuki H27A is a 2,736 cc V6 petrol engine engineered for mid-size SUV applications (1998-2006). It combines multi-point fuel injection with DOHC technology to deliver smooth power delivery and refined operation. Designed to meet Euro 3 standards, it balances everyday performance with reasonable fuel efficiency for its displacement class.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,736 cc | |
Fuel type | Petrol | |
Configuration | V6, DOHC, 24-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 88.0 mm × 75.0 mm | |
Power output | 132-140 kW (177-188 PS) | |
Torque | 245-265 Nm @ 4,000 rpm | |
Fuel system | Multi-point fuel injection | |
Emissions standard | Euro 3 | |
Compression ratio | 9.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Belt-driven (replace every 100,000 km) | |
Oil type | API SL/SM 5W-30 | |
Dry weight | 148 kg |
The Suzuki H27A was used across Suzuki's Second-generation Grand Vitara platform with longitudinal mounting and exclusive to Suzuki models. This engine received platform-specific adaptations-reinforced engine mounts in the XL-7 and revised intake manifolds in later Grand Vitara models-and from 2003 the facelifted Grand Vitara featured an improved timing belt tensioner, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The H27A's primary reliability risk is timing belt tensioner failure on early builds, with elevated incidence in high-mileage vehicles. Internal Suzuki data from 2004 indicated a notable share of pre-2003 engines requiring tensioner replacement before 100,000 km, while UK DVSA records link a portion of emissions-related MOT failures to EGR valve carbon buildup in urban-driven vehicles. Regular maintenance intervals and belt replacement are critical for long-term reliability.
Analysis derived from Suzuki technical bulletins (2003-2006) and UK DVSA failure statistics (2005-2020). 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 H27A is generally reliable when properly maintained, though early models (pre-2003) had timing belt tensioner issues. Post-2003 engines with the revised tensioner design have proven more durable. Regular timing belt replacement every 100,000 km is essential for long-term reliability.
The most common issues include timing belt tensioner failure (pre-2003 models), EGR valve carbon buildup causing rough idle, crankshaft position sensor failure leading to stalling, and ignition coil degradation causing misfires. These are well-documented in Suzuki service bulletins.
The 2.7L V6 H27A was used in the second-generation Suzuki Grand Vitara (1998-2005) and the Grand Vitara XL-7 (2001-2006). It was also used in the Chevrolet Tracker (1999-2004) under the GM-Suzuki partnership, though with different engine management tuning.
The H27A has limited tuning potential in stock form. Basic improvements include a free-flow exhaust, high-flow air filter, and ECU remapping, which might yield 10-15 kW gains. Significant power increases would require extensive internal modifications, as the engine was not designed for high performance.
Fuel economy is moderate for a V6 of this era. In a Grand Vitara, typical consumption is approximately 13.0 L/100km (city) and 9.5 L/100km (highway), or about 25-30 mpg UK combined. The XL-7, being heavier, typically returns 1-2 L/100km worse economy across all driving conditions.
Yes. The H27A is an interference engine, meaning if the timing belt fails, pistons can contact open valves, causing severe engine damage. This makes timely timing belt replacement every 100,000 km or 5 years absolutely critical to prevent catastrophic failure.
Suzuki specifies API SL/SM 5W-30 oil for the H27A engine. This viscosity provides optimal protection for the engine's bearings and ensures proper oil flow to the overhead camshafts. Oil changes should be performed every 10,000 km or 6 months, whichever comes first.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with SUZUKI or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
SUZUKI Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
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.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialSUZUKI documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.