Forenza 1.6L Petrol Engines
from £800 to £1,800
Rebuilt units from £800 · Common codes: Z16XE, G16B, M16A
Get quotes from trusted UK Suzuki Forenza engine specialists. Compare used and reconditioned prices for 2.0L petrol - T20SED covered. Find the best value for your budget.
Forenza 1.6L Petrol Engines
from £800 to £1,800
Rebuilt units from £800 · Common codes: Z16XE, G16B, M16A
Forenza 1.8L Petrol Engines
from £900 to £2,000
Rebuilt units from £900 · Common codes: Z18XE, T20SED
Forenza 1.4L Petrol Engines
from £700 to £1,600
Rebuilt units from £700 · Common codes: G14B, A15MF

Most replacements completed within 3-5 days.


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Not sure which variant your Suzuki Forenza is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Every engine code fitted to the Suzuki Forenza across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Extracted from detailed petrol and performance engine families across Suzuki Forenza variants.

Z16XE - 1.6L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
Avg. rebuilt price
£800 - £1,800
Supply only
Technical specifications
Common failures
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Suzuki Forenza engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Suzuki Forenza's GM-sourced engines are economical but suffer from interference design risks and head gasket vulnerabilities. The Z16XE and Z18XE dominate UK replacement enquiries due to timing belt failures and MLS gasket issues. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original...
Timing Belt Failure
Most affected vehicles
Suzuki Forenza GL, GLX, SX, Sport (2004-2008, Z16XE, Z18XE, G14B, G16B)
Failure mileage range
60,000-90,000 miles
Typical failure window
Root cause
Timing belt tensioner wear causes belt slip or snap; interference design means valves collide with pistons.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Belt Replacement | £450 - £750 | £280 - £450 | New timing belt, tensioner, water pump fitted before failure occurs. | Viable only if caught early; prevents catastrophic damage. |
| Full Replacement - Rebuilt Engine | £2,200 - £3,800 | £800 - £1,800 | Supply & fit of rebuilt Z16XE/Z18XE with upgraded gaskets and tensioners, bench-tested, 12-month warranty. | Only option after belt snap; valves bent, head damage likely. |
Our recommendation
On a Forenza worth £500-£1,500, preventative belt replacement at 60k miles is essential. If the belt has snapped, a rebuilt engine is often more cost-effective than cylinder head repair.
Compare rebuilt Z16XE engine prices for your Suzuki Forenza
Every engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Compare Suzuki Forenza engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Suzuki Forenza within hours.

Every displacement fitted to the Suzuki Forenza is listed below, with compatible engine codes, production years and common failure notes to help you identify the correct replacement.
The 1.4L G14B was the entry-level engine for early Forenza GL models on the DM chassis, offering economical running but requiring strict timing belt maintenance due to its interference design.
Engine Code(s)
G14B
Compatible Models (UK)
Forenza GL
Power output
Verified by registration
Common Failure Points
Timing belt tensioner wear; water pump leakage requiring preventative replacement
Production Years: DM chassis, 2004-2006
Compare Suzuki Forenza 1.4L petrol engine prices
Choose your Suzuki Forenza engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the economical 1.4L G14B to the performance-oriented 1.8L Z18XE.
All UK-market Suzuki Forenza imports were petrol-powered, using GM-sourced engines shared with Daewoo Nubira, Chevrolet Optra and Vauxhall Astra G.
Common Suzuki Forenza Petrol Engine Families
Found In
Known For
Typical Petrol Models
All UK-market Suzuki Forenza imports were petrol-powered, using GM-sourced engines shared with Daewoo Nubira, Chevrolet Optra and Vauxhall Astra G.
Common Suzuki Forenza Petrol Engine Families
Found In
Known For
Typical Petrol Models
A small number of Forenza imports were factory or aftermarket converted to LPG bi-fuel operation, requiring hardened valve seats for compatibility.
Suzuki Forenza LPG Engine Codes
Found In
Important Notes
Not sure which fuel type your Suzuki Forenza has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Suzuki Forenza specialists.

This section covers all major engine changes across the Suzuki Forenza's UK import timeline, organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.
⚙Key Changes
▣Main Engines
Z16XE- 1.6L petrol (GL, GLX, SX)
G14B- 1.4L petrol (GL base)
G16B- 1.6L SOHC petrol (early GLX)
▰Popular Models
🔧Known For
Engine Codes Covered:
Z16XEG14BG16B