Fiat Mobi 1.0 Firefly Engines
from £1,400 to £3,200
Rebuilt units from £1,400 · Common codes: 312A1000, GSE4G10, 312B1000
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Fiat Mobi Engine Replacement - Compare Prices & Save
Get quotes from trusted UK Fiat Mobi engine specialists. Compare used and reconditioned prices for 1.0L Fire/Firefly - Fire & Firefly covered. Find the best value for your budget.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
Fiat Mobi 1.0 Fire Evo Engines
from £1,200 to £2,800
Rebuilt units from £1,200 · Common codes: 312B2000, 312A2000, FIRE10EVO
Fiat Mobi Flex Fuel Engines
from £1,500 to £3,500
Rebuilt units from £1,500 · Common codes: 312B2000FF, GSE4G10FF
Instant engine replacement quote - 100% free, no obligation
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Compare reconditioned, rebuilt & used engine prices
Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best Fiat Mobi Replacement Engineto Finding the Best Fiat Mobi Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
Average Market Prices
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↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by Fiat Mobi Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Fiat Mobi engines through EngineMarket.
4.8
★★★★★
out of 5
1,081 verified reviews
★★★★★
“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
JJimmyGoogle
★★★★★
“Got three quotes within an hour and chose the best deal easily. The whole process was quick, clear and stress-free.”
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“I wasn't sure what I needed, but they helped me identify the right engine and connected me with a trusted garage.”
SSophieTrustpilot
★★★★★
“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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Variants We Cover
Fiat Mobi Engine ReplacementAll Variants Covered
Fiat Mobi Drive
GSE4G10 1.0L Petrol
Rebuilt Engines: £1,400-£3,200
Fiat Mobi Trekking
312B2000/GSE4G10 1.0L Petrol
Rebuilt Engines: £1,200-£3,200
Fiat Mobi Way
312B2000 1.0L Petrol
Rebuilt Engines: £1,200-£2,800
Fiat Mobi Like
312B2000 1.0L Petrol
Rebuilt Engines: £1,200-£2,800
Fiat Mobi Easy
312B2000 1.0L Petrol
Rebuilt Engines: £1,200-£2,800
Fiat Mobi Easy On
312B2000 1.0L Petrol
Rebuilt Engines: £1,200-£2,800
Fiat Mobi Like On
312B2000 1.0L Petrol
Rebuilt Engines: £1,200-£2,800
Fiat Mobi 2025
GSE4G10 1.0L Petrol
Rebuilt Engines: £1,500-£3,500
Fiat Mobi Flex Fuel
312B2000FF 1.0L Flex
Rebuilt Engines: £1,500-£3,500
Fiat Mobi GSR Automatic
GSE4G10 1.0L Petrol
Rebuilt Engines: £1,600-£3,400
Not sure which variant your Fiat Mobi is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
Mobi
Engine Codes
Fiat Mobi Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Fiat Mobi across all import 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.
Petrol Engines
Extracted from detailed petrol and performance engine families across Fiat Mobi variants.
312B2000 - 1.0L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
EasyEasy OnLikeLike OnWayTrekking (pre-2021)
Avg. rebuilt price
£1,200 - £2,800
Supply only
Technical specifications
- Fuel type
- Petrol
- Engine size
- 1.0L
- Power output
- 73-75 hp
- Years fitted
- 2016-2024
Common failures
- ●Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
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 Fiat Mobi engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
Mobi
Common Problems
Fiat Mobi Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The Fiat Mobi's 1.0 Fire Evo and Firefly engines are generally robust but face specific failure patterns common to Brazilian-market operation and UK import use. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty. Use the...
Timing Chain Rattle - Why Firefly Engines Fail Prematurely
Timing Chain Rattle
Most affected vehicles
Fiat Mobi DriveTrekking facelift (2017-2024
Fiat Mobi Drive, Trekking facelift (2017-2024, GSE4G10 & 312A1000)
Failure mileage range
50,000-90,000 miles
Typical failure window
Root cause
The Firefly's timing chain tensioner can wear prematurely, allowing chain slack that causes startup rattle and potential jump.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Tensioner Replacement | £450 - £750 | £280 - £480 | Replace tensioner and guide rails before chain damage occurs | Viable only if caught early before chain stretch; 20-30k mile extension |
| Intermediate - Full Timing Set Replacement | £900 - £1,400 | £550 - £850 | Replace chain, tensioner, guides and sprockets with upgraded components | Restores factory timing; suitable if block/head undamaged |
| Full Replacement - Rebuilt / Reconditioned Engine | £2,200 - £3,800 | £1,400 - £3,200 | Supply & fit rebuilt Firefly engine with upgraded tensioner, bench-tested, 12-month warranty | Best value if chain has jumped or caused valve damage; eliminates recurrence risk |
Our recommendation
On a Fiat Mobi worth £4,000-£7,000, preventative tensioner replacement at 45k miles offers excellent value. If rattle is already present, get quotes for both full timing set and rebuilt engine - the cost difference is often smaller than expected once import logistics are factored in.
Compare rebuilt Firefly engine prices for your Fiat MobiReplacement Engine Options
Fiat Mobi Engine TypesOptions, Costs & What to Expect
Every Fiat Mobi engine type is available through our UK specialist network with typical price ranges based on variant, engine code and import logistics.
Fiat Mobi Reconditioned Engines (Recon)£1,100 - £2,600((supply only))
Fiat Mobi Rebuilt Engines£1,400 - £3,200((supply only))
Fiat Mobi Used Engines£800 - £2,100((supply only))
Fiat Mobi Remanufactured Engines£1,800 - £3,800((supply only))
Fiat Mobi Refurbished Engines£950 - £2,400((supply only))
Compare Fiat Mobi 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 Fiat Mobi within hours.
Engine Sizes
Fiat Mobi Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the Fiat Mobi across UK imports is listed below, with compatible engine codes, production years and common failure notes to help you identify the correct replacement.
The Fiat Mobi was exclusively offered with 1.0-litre petrol engines across all UK-imported variants, split between the older 4-cylinder Fire Evo and newer 3-cylinder Firefly families. Both are naturally aspirated, flex-fuel capable in Brazilian specification, and share mounting points but differ in ancillary layout and ECU calibration.
⚙
Engine Code(s)
312B2000, 312A2000, GSE4G10, 312A1000
▣
Compatible Models (UK)
Easy, Like, Drive, Trekking, Way
ϟ
Power output
Verified by registration
△
Common Failure Points
Fire Evo: head gasket, timing belt; Firefly: timing chain tensioner, carbon buildup
Production Years: 2016-Present
Compare Fiat Mobi 1.0L petrol engine pricesFuel Type
Fiat Mobi Engines by Fuel Type
Choose your Fiat Mobi engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early Fire Evo to the latest Firefly.
Fiat Mobi Petrol Engines
PetrolAll UK-imported Fiat Mobi variants use 1.0L naturally aspirated petrol engines, split between the proven 4-cylinder Fire Evo and modern 3-cylinder Firefly families.
Common Fiat Mobi Petrol Engine Families
- •312B2000 - Fire Evo 4-cyl (Easy/Like/Way), head gasket prone at high mileage
- •GSE4G10 - Firefly 3-cyl (Drive/Trekking), timing chain tensioner wear common
- •312A2000/312A1000 - early production codes, mechanically similar to main families
Found In
- •First generation (2016-2020) - Fire Evo dominant, Firefly introduced 2017
- •Facelift generation (2021-Present) - Firefly standard, Fire Evo phased out
Known For
- •Simple, lightweight design suited to urban Brazilian conditions
- •Fire Evo timing belt requires 60k mile replacement to avoid failure
- •Firefly offers better fuel economy but rarer in UK import market
Typical Petrol Models
- •Mobi Easy
- •Mobi Like
- •Mobi Drive
1 of 2
Fiat Mobi Petrol Engines
PetrolAll UK-imported Fiat Mobi variants use 1.0L naturally aspirated petrol engines, split between the proven 4-cylinder Fire Evo and modern 3-cylinder Firefly families.
Common Fiat Mobi Petrol Engine Families
- •312B2000 - Fire Evo 4-cyl (Easy/Like/Way), head gasket prone at high mileage
- •GSE4G10 - Firefly 3-cyl (Drive/Trekking), timing chain tensioner wear common
- •312A2000/312A1000 - early production codes, mechanically similar to main families
Found In
- •First generation (2016-2020) - Fire Evo dominant, Firefly introduced 2017
- •Facelift generation (2021-Present) - Firefly standard, Fire Evo phased out
Known For
- •Simple, lightweight design suited to urban Brazilian conditions
- •Fire Evo timing belt requires 60k mile replacement to avoid failure
- •Firefly offers better fuel economy but rarer in UK import market
Typical Petrol Models
- •Mobi Easy
- •Mobi Like
- •Mobi Drive
Fiat Mobi Flex Fuel Engines
DieselBrazilian-market flex-fuel variants of both Fire Evo and Firefly engines, capable of running on petrol, ethanol or any mixture.
Fiat Mobi Flex Fuel Engine Codes
- •312B2000FF - Fire Evo flex-fuel, Easy/Like Flex variants
- •GSE4G10FF - Firefly flex-fuel, Drive/Trekking Flex variants
- •Ethanol content sensor adjusts fuel mapping and ignition timing automatically
Found In
- •Easy Flex, Like Flex, Trekking Flex, Way Flex (2016-Present)
Important Notes
- •UK petrol only; flex capability unused but engine hardware remains
- •Fuel system may require inspection for ethanol-related corrosion on import
- •Replacement engines must match flex or non-flex specification for ECU compatibility
Not sure which fuel type your Fiat Mobi 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 Fiat Mobi specialists.
Engine YearsGet quotes for 2016-2017 Fiat Mobi replacement engines →
Fiat Mobi Engines by YearWhat Was Fitted & WhenFiat Mobi Engines by Year - What Was Fitted & When
This timeline covers all major engine changes across the Fiat Mobi's production history, organised so UK import owners can quickly identify their engine and compare rebuilt prices from specialists.
⚙Key Changes
- ✓Fiat Mobi introduced to Brazilian market, later imported privately to UK
- ✓Fire Evo engine code 312B2000 standard across all variants
- ✓Manual transmission only; no automatic option at launch
▣Main Engines
312B2000- 1.0 petrol Fire Evo (Easy / Like / Way)
312A2000- 1.0 petrol early production Fire Evo (limited)
▰Popular Models
- •Fiat Mobi Easy
- •Fiat Mobi Like
- •Fiat Mobi Way
🔧Known For
- ✓Simple, proven engine design with wide parts compatibility
- ✓Head gasket failures begin appearing on high-mileage examples
- ✓Cooling system components prone to degradation in hot climates
Engine Codes Covered:
312B2000312A2000Not sure which year your Fiat Mobi was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Fiat Mobi specialists.
FAQ