Ford Kuga STLine 1.5 EcoBoost Engine Replacement - Compare Prices & Get Quotes
Get quotes today from trusted UK Ford Kuga ST-Line 1.5 EcoBoost engine specialists. Compare prices on reconditioned, rebuilt and used engines to find the most reliable and cost-effective solution for your vehicle.
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12-Month Warranty
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From £2,500 to £4,000 [EM-QUOTE]
Used from £600 · Reconditioned from £1,600 · Common codes: M1JA, M1JC, M1JJ, YYJA, YYJB
From £600
Tested, bare/short engine
From £1,600
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
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3 Simple Steps3 Simple Stepsto Finding the Best Ford Kuga ST-Line 1.5 EcoBoost Replacement Engineto Finding the Best Ford Kuga ST-Line 1.5 EcoBoost Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryFord Kuga ST-Line 1.5 EcoBoost - Engine History & Specs at a Glance
When the ST-Line trim was paired with the 1.5 EcoBoost engine, it brought sporty aesthetics and punchy performance to the Kuga range, though its "wet belt" architecture requires vigilant maintenance to prevent catastrophic failure.
Variant HistoryFord Kuga ST-Line 1.5 EcoBoost - Engine History & Specs at a Glance
When the ST-Line trim was paired with the 1.5 EcoBoost engine, it brought sporty aesthetics and punchy performance to the Kuga range, though its "wet belt" architecture requires vigilant maintenance to prevent catastrophic failure.
Ford Kuga ST-Line 1.5 EcoBoost
Fuel TypePetrol
Engine Size Range1.5L
Power Output Range120 PS - 150 PS (88 kW - 110 kW)Engine History Timeline
M1JA (150 PS) introduced in the Ford Kuga Mk2 ST-Line establishing the 1.5-litre turbocharged petrol as the performance-oriented choice for the trim.
M1JC / M1JJ (150 PS) introduced with minor revisions to the wet belt and oil pump drive belt materials following early wear concerns though the core belt-in-oil architecture remained.
YYJA / YYJB (120 PS / 150 PS) introduced in the Ford Kuga Mk3 ST-Line featuring improved overall durability and start-stop technology, but still requiring strict adherence to Ford-specific oil change intervals.
Key Specs Snapshot
Fuel TypePetrolEngine Size Range1.5LPower Output Range120 PS - 150 PS (88 kW - 110 kW)Years Produced2015-presentEvery engine fitted to the Ford Kuga ST-Line 1.5 EcoBoost is covered below, with UK rebuilt pricing and known failure points.
Ford Kuga ST-Line 1.5 EcoBoost Engine Codes - Specifications & Replacement CostFord Kuga ST-Line 1.5 EcoBoost Engine Codes - Specifications & Replacement Cost
1.5L Petrol (2015-2018)
Power Output150 PS (110 kW)Years Fitted2015-2018
Compatible Trim Levels
- ST-Line
- ST-Line X
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£600-£1,400 [EM-QUOTE]
Reconditioned
Addressed known issues, tested
£1,600-£3,000 [EM-QUOTE]
Rebuilt
Full teardown, upgraded internals
£2,500-£4,000 [EM-QUOTE]
Common Failure
Wet belt degrades and sheds debris into the oil system, clogging the oil pickup strainer and leading to catastrophic oil starvation and engine seizure if not replaced preventatively (typically 60k-90k miles).
The Ford Kuga ST-Line 1.5 EcoBoost delivers strong performance, but its "wet belt" (belt-in-oil) design is a well-documented vulnerability across the EcoBoost family. The M1JA, M1JC, and YYJA codes dominate replacement demand for this variant. Rebuilt engines through EnginesMarket include upgraded components addressing the original failure point, plus a minimum 12-month unlimited-mileage warranty.
Why the Ford Kuga ST-Line 1.5 EcoBoost Wears Prematurely
Affected Vehicles
Ford Kuga ST-Line 1.5 EcoBoost (M1JA, M1JC, M1JJ, YYJA, 2015-present)
Typical Failure Mileage
60,000-100,000 miles
Root Cause
The timing belt runs in engine oil. Over time, petrol contamination and heat cause the belt to degrade, shedding rubber debris that blocks the oil pump pickup strainer, leading to a drop in oil pressure and catastrophic engine seizure.
Why It Happens
The timing belt runs in engine oil. Over time, petrol contamination and heat cause the belt to degrade, shedding rubber debris that blocks the oil pump pickup strainer, leading to a drop in oil pressure and catastrophic engine seizure.
Dealer (parts + labour)
£1,200-£1,800
Specialist (parts + labour)
£800-£1,500
What it involves
Replacing the wet belt, oil pump drive belt, and full oil system flush before failure occurs.
Suitability
Highly recommended at 60k miles or 6 years to avoid engine replacement.
1 - 2 daysDealer (parts + labour)
£4,500-£6,500+
Specialist (parts + labour)
£2,500-£4,000
What it involves
Supply & fit, upgraded components addressing the original failure point, 12-month warranty.
Suitability
The only viable option once oil starvation has caused bearing damage or seizure.
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 |
|---|---|---|---|---|---|
 Preventative Belt Replacement Minor | £1,200-£1,800 | £800-£1,500 | Replacing the wet belt, oil pump drive belt, and full oil system flush before failure occurs. | Highly recommended at 60k miles or 6 years to avoid engine replacement. | 1 - 2 days |
 Full Replacement - rebuilt/reconditioned engine Best Value | £4,500-£6,500+ | £2,500-£4,000 | Supply & fit, upgraded components addressing the original failure point, 12-month warranty. | The only viable option once oil starvation has caused bearing damage or seizure. | 1 - 2 days |
Our Recommendation
Our Recommendation
If your Ford Kuga ST-Line 1.5 EcoBoost is showing early warning signs (rattling on cold start, coolant loss, or oil pressure warning), pursue preventative belt replacement or cooling system repair immediately. If the engine has already seized or suffered severe overheating, a reconditioned or rebuilt unit is the most reliable long-term solution, provided the vehicle's value justifies the investment.
Don't Let Engine Failure Write Off Your Ford Kuga ST-Line 1.5 EcoBoost
Ignoring wet belt warnings or coolant leaks can quickly turn a manageable repair into a catastrophic engine failure. By comparing quotes through EnginesMarket, you secure a rebuilt or reconditioned Ford Kuga ST-Line 1.5 EcoBoost engine with upgraded components, a minimum 12-month unlimited-mileage warranty, and nationwide delivery-often at a fraction of the main dealer's replacement premium.
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 Ford Kuga ST-Line 1.5 EcoBoost. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier."
Ford Kuga ST-Line 1.5 EcoBoost Engine ReplacementFrequently Asked Questions
Question 1How much does a Ford Kuga ST-Line 1.5 EcoBoost engine replacement cost-
A full rebuilt or reconditioned Ford Kuga ST-Line 1.5 EcoBoost engine typically costs between £2,500 and £4,000, including supply and fit.
- Rebuilt units include upgraded components and a 12-month warranty.
- Main dealers often charge £5,000+ for the same replacement.
- Used engines are a popular budget alternative, starting from around £600.
Question 2Does the Ford Kuga 1.5 EcoBoost have the wet belt problem-
Yes, the Ford Kuga 1.5 EcoBoost (including ST-Line variants) uses a "wet belt" (belt-in-oil) design.
- The timing belt runs inside the engine oil and can degrade over time.
- If not replaced preventatively (typically every 6 years or 60,000 miles), it sheds debris that blocks the oil pickup, causing catastrophic engine seizure.
- This is the single most common reason for Ford Kuga ST-Line 1.5 EcoBoost engine replacements.
Question 3Is it worth replacing the engine in a Ford Kuga ST-Line 1.5 EcoBoost-
It depends on the vehicle's current market value and overall condition.
- For older Mk2 models valued under £9,000, a full rebuilt engine replacement may approach 40-50% of the vehicle's value, making a low-mileage used engine or preventative repair more sensible.
- For newer Mk3 models valued over £12,000, a reconditioned or rebuilt engine with a 12-month warranty is a financially sound investment to preserve the vehicle's sporty utility.
Question 4How long does a Ford Kuga ST-Line 1.5 EcoBoost engine replacement take-
A standard Ford Kuga ST-Line 1.5 EcoBoost engine swap typically takes 5 to 7 working days.
- This includes sourcing the correct engine code (e.g., M1JA, M1JC, or YYJA).
- Nationwide delivery to your chosen specialist.
- Physical installation, fluid top-up, and comprehensive road testing.
Question 5What is the difference between the M1JA and YYJA Ford Kuga 1.5 EcoBoost engines-
Both are 1.5-litre turbocharged petrol engines from the same EcoBoost family, but they belong to different generations.
- The M1JA (2015-2018) is a Mk2 engine producing 150 PS.
- The YYJA (2020-present) is a Mk3 engine available in 120 PS or 150 PS outputs, featuring updated engine management and start-stop technology.
- Both share the wet belt architecture, meaning the same preventative maintenance rules apply to both.
Why Choose UsCompare Ford Kuga ST-Line 1.5 EcoBoostEngine PricesToday
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