Hyundai i20 1.0 TGDi Engine Replacement - Compare Prices & Get Quotes
Compare and save with affordable prices on reconditioned, rebuilt and used engines. Get quotes today from trusted UK Hyundai i20 1.0 T-GDi engine specialists.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
From £1,800 to £3,200 [ESTIMATED]
Used from £800 · Reconditioned from £1,400 · Common codes: G3LC
From £800
Tested, bare/short engine
From £1,400
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
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3 Simple Steps3 Simple Stepsto Finding the Best Hyundai i20 1.0 T-GDi Replacement Engineto Finding the Best Hyundai i20 1.0 T-GDi Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryHyundai i20 1.0 T-GDi - Engine History & Specs at a Glance
When the 1.0 T-GDi launched in the i20 lineup, it introduced a punchy, downsized three-cylinder turbocharged petrol architecture, offering excellent fuel economy and surprising performance for the supermini class.
Variant HistoryHyundai i20 1.0 T-GDi - Engine History & Specs at a Glance
When the 1.0 T-GDi launched in the i20 lineup, it introduced a punchy, downsized three-cylinder turbocharged petrol architecture, offering excellent fuel economy and surprising performance for the supermini class.
Hyundai i20 1.0 T-GDi
Fuel TypePetrol / MHEV Petrol
Engine Size Range1.0L (998cc)
Power Output Range100-120hpEngine History Timeline
Kappa II 1.0 T-GDi (1.0L 100-120hp) introduced to the i20 GB facelift, replacing older naturally aspirated engines with a turbocharged, direct-injection setup.
Smartstream G3LC (1.0L 100-120hp) introduced to the all-new i20 BC3, featuring advanced thermal management, revised cylinder head cooling, and optional 48V mild-hybrid integration.
Present - Continuous software and emissions refinements to the Smartstream G3LC maintaining its position as the premier petrol option in the i20 range.
Key Specs Snapshot
Fuel TypePetrol / MHEV PetrolEngine Size Range1.0L (998cc)Power Output Range100-120hpYears Produced2016-presentEvery engine fitted to the Hyundai i20 1.0 T-GDi is covered below, with UK rebuilt pricing and known failure points.
Hyundai i20 1.0 T-GDi Engine Codes - Specifications & Replacement CostHyundai i20 1.0 T-GDi Engine Codes - Specifications & Replacement Cost
1.0L Petrol (2016-present)
Power Output100-120hpYears Fitted2016-present
Compatible Trim Levels
- i20 1.0 T-GDi SE
- i20 1.0 T-GDi Premium
- i20 1.0 T-GDi N Line
- i20 1.0 T-GDi Ultimate
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£800-£1,500
Reconditioned
Addressed known issues, tested
£1,400-£2,400
Rebuilt
Full teardown, upgraded internals
£1,800-£3,200
Common Failure
Direct injection (GDI) carbon buildup on the intake valves and turbocharger wastegate rattle are commonly reported issues. Timing chain stretch can also occur if oil change intervals are extended. Typical failure mileage ranges from 60,000 to 100,000 miles.
The G3LC 1.0-litre turbocharged petrol engine dominating the Hyundai i20 1.0 T-GDi is an efficient and lively unit, but its compact, high-revving design makes it susceptible to specific carbon buildup and turbo wear issues. Rebuilt G3LC engines through EnginesMarket include upgraded components addressing these original failure points, plus a minimum 12-month unlimited-mileage warranty.
Why the Hyundai i20 1.0 T-GDi G3LC Loses Power
Affected Vehicles
Hyundai i20 1.0 T-GDi (G3LC, 2016-present)
Typical Failure Mileage
60,000-100,000 miles
Root Cause
Because the G3LC uses direct injection, fuel is sprayed directly into the cylinder rather than over the intake valves. Over time, oil vapour from the PCV system bakes onto the valves, restricting airflow. Concurrently, the turbocharger wastegate actuator pin can wear, causing a metallic rattle and boost leaks.
Why It Happens
Because the G3LC uses direct injection, fuel is sprayed directly into the cylinder rather than over the intake valves. Over time, oil vapour from the PCV system bakes onto the valves, restricting airflow. Concurrently, the turbocharger wastegate actuator pin can wear, causing a metallic rattle and boost leaks.
Dealer (parts + labour)
£600-£900
Specialist (parts + labour)
£350-£550
What it involves
Specialist walnut blasting to clean intake valves and replacing the worn turbo wastegate actuator pin.
Suitability
Highly cost-effective if caught early before the turbo fails completely or misfires damage the catalytic converter.
1 - 2 daysDealer (parts + labour)
£4,000-£5,500
Specialist (parts + labour)
£1,800-£3,200
What it involves
Supply & fit of a fully rebuilt G3LC with upgraded timing components, revised turbo cooling, and a 12-month warranty.
Suitability
The right call if the timing chain has stretched, the turbo has failed catastrophically, or bottom-end bearing wear is present.
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Minor/Preventative (Walnut Blast & Wastegate Pin) Minor | £600-£900 | £350-£550 | Specialist walnut blasting to clean intake valves and replacing the worn turbo wastegate actuator pin. | Highly cost-effective if caught early before the turbo fails completely or misfires damage the catalytic converter. | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £4,000-£5,500 | £1,800-£3,200 | Supply & fit of a fully rebuilt G3LC with upgraded timing components, revised turbo cooling, and a 12-month warranty. | The right call if the timing chain has stretched, the turbo has failed catastrophically, or bottom-end bearing wear is present. | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
Modern Hyundai i20 1.0 T-GDi values typically range from £6,000 to £18,000+ depending on generation (GB vs BC3), specification, and mileage [THIRD-PARTY]. Because the vehicle worth is well above £5,000, a £1,800-£3,200 rebuilt Hyundai i20 1.0 T-GDi engine replacement cost is typically a sound investment that preserves the vehicle's usability and strong market value ( Safe).
Our Recommendation
Our Recommendation
If your Hyundai i20 1.0 T-GDi is just feeling sluggish or emitting a slight rattle on overrun, a specialist walnut blast and wastegate repair is the most cost-effective route to compare and save. However, if the engine exhibits timing chain rattle, loss of power, or metallic knocking from the bottom end, a full rebuilt unit with upgraded components is the only reliable long-term solution.
Don't Let Engine Failure Write Off Your Hyundai i20 1.0 T-GDi
Don't let a carbon buildup issue or turbo fault sideline your i20. By comparing quotes through our network, you secure a rebuilt G3LC with upgraded components, a 12-month warranty, and nationwide delivery-avoiding the steep premiums of main dealer replacements while finding the best prices.
Compare rebuilt G3LC Hyundai i20 1.0 T-GDi engine prices
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Hyundai i20 1.0 T-GDi. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier.
Hyundai i20 1.0 T-GDi Engine ReplacementFrequently Asked Questions
Question 1How much does a Hyundai i20 1.0 T-GDi engine replacement cost-
A reconditioned or rebuilt G3LC engine for the Hyundai i20 1.0 T-GDi typically costs between £1,400 and £3,200 for the supply-only unit in the UK.
- Used G3LC engines start around £800 but carry higher risk due to unknown history.
- Rebuilt units with updated timing components sit at the £1,800-£3,200 mark.
- Supply and fit labour will add £450-£650 depending on the specialist.
Question 2What are the signs of carbon buildup or turbo failure in a Hyundai i20 1.0 T-GDi-
The G3LC engine is prone to direct injection carbon buildup and turbocharger wastegate wear. Watch for early warning signs before catastrophic failure.
- Hesitation on acceleration, rough idling, or a noticeable drop in fuel economy.
- A distinct metallic rattling or buzzing noise from the turbo area on overrun.
- Engine management lights indicating misfires or boost pressure faults.
Question 3Is it worth replacing the engine in a modern Hyundai i20 1.0 T-GDi-
Yes, the modern Hyundai i20 1.0 T-GDi market holds its value well, making a full engine replacement a financially sound decision compared to parting out.
- Modern 1.0 T-GDi models regularly sell for £6,000 to £18,000+.
- A £1,800-£3,200 rebuilt engine preserves the vehicle's drivability, refinement, and market value.
Question 4How long does a Hyundai i20 1.0 T-GDi engine replacement take-
Because the G3LC is a compact, densely packed turbocharged engine, a specialist workshop requires specific diagnostic tools and careful extraction.
- Engine removal and refitting usually takes 8 to 10 hours of labour.
- Total workshop turnaround is typically 3 to 5 working days, including ECU coding and adaptation.
Question 5What is the difference between the Hyundai i20 1.0 T-GDi and 1.2 MPi engines-
While both are petrol engines, the 1.0 T-GDi uses a turbocharged three-cylinder design, whereas the 1.2 MPi is a naturally aspirated four-cylinder unit.
- The 1.0 T-GDi offers significantly better low-end torque and fuel efficiency but requires stricter thermal and carbon management.
- The 1.2 MPi is simpler mechanically, making it generally more robust for high-mileage urban use, though it lacks the punch of the turbocharged unit.
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