How much does a Mercedes-AMG GLA45 engine replacement cost in the UK?

A reconditioned Mercedes-AMG GLA45 engine (M133.980) typically costs £5,500–£8,500 supply only. Fitting adds £1,200–£1,800. A turbocharger replacement costs £1,500–£3,500. Check the Era Map above for your engine code.

Is the Mercedes-AMG GLA45 engine reliable?

The M133 is generally durable but can develop issues as mileage rises. Turbocharger stress and timing chain stretch are the defining concerns. The 2015+ facelift upgraded output from 360PS to 381PS. Proper maintenance is critical — regular oil changes (more frequent than the standard schedule) and proactive attention to the turbo and timing chain are essential.

What are the common problems with the Mercedes-AMG GLA45?

Turbocharger stress/failure (power loss, whistling, £1,500–£3,500), timing chain stretch (cold-start rattle, £1,500–£3,500), carbon build-up on intake valves (misfires, flat spots, £400–£800), oil leaks (valve cover/oil filter housing, £300–£800), and 7G-DCT overheating (transmission warnings, £800–£2,500).

Is it worth replacing a Mercedes-AMG GLA45 engine, or should I scrap the car?

GLA45 values range from £12,000–£35,000 depending on year, condition and mileage. A £5,500–£8,500 reconditioned engine represents 15–70% of vehicle value — our 70% Mercedes-Benz scrap threshold means careful evaluation is required. For a well-maintained, low-mileage example, replacement is often justified. For a higher-mileage example with other issues, assess scrap value first.

How do I find my Mercedes-AMG GLA45 engine code?

The GLA45 uses the M133.980 engine code — Mercedes-AMG's 2.0-litre turbocharged inline-four. Pre-2015 models produce 360PS; 2015+ models produce 381PS. The code is stamped on the engine block; your VIN and vehicle documentation will also confirm the specification.

Can I repair the timing chain stretch issue, or does it need replacement?

Yes — if caught early. Timing chain and guide replacement costs £1,500–£3,500 and is significantly cheaper than a full engine replacement (£5,500–£8,500). There are cases of premature chain stretching, especially with infrequent oil changes or aggressive operation. At the first sign of cold-start rattle, book an inspection immediately — ignored chain wear can lead to catastrophic engine failure.

Mercedes-AMG GLA452014–20192.0L Turbo Petrol

Mercedes-AMG GLA45 Engine Replacement — Compare Prices & Get Quotes

Name: Mercedes-AMG GLA45 UK Engine Enquiry Data 2025
Creator: MercedesEngine.uk

Get quotes today from trusted UK Mercedes-AMG specialists. The GLA45 is the compact SUV with supercar punch — a hand-built 2.0-litre M133 turbo four. Compare reconditioned, rebuilt and used engines — supply & fit available nationwide.

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Mercedes-AMG GLA45 Engines — from £4,000 to £10,000Code: M133.980

Mercedes-AMG GLA45 Engines — from £4,000 to £10,000· Code: M133.980

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Mercedes-AMG GLA45 — Which Engine Does Your Car Actually Have?

Four generations. Four eras. One guide to reliability, costs and what really matters.

Era Note

360–381bhp — hand-built AMG four, turbo stress and timing chain are key watchpoints

GenerationYearsEngine CodeReliabilityRecon CostEra Note

X156 GLA45 BMW 320d X156 GLA45

2014–2019M133.980 (2.0L turbo petrol)★★★½☆ [NEWLY ASSIGNED — see Data Note]£5,000–£8,500 [PLACEHOLDER — confirm vs cost sheet]360–381bhp — hand-built AMG four, turbo stress and timing chain are key watchpoints

Why use this era map?

This table is the single source every other section on this page matches — Sections 2, 4 and 6 reference it rather than restating conflicting figures.

Real UK Cost Data

Verified Reliability

Expert Insights

Updated for 2025

Mercedes-AMG GLA45 Engine Replacement Costs

Supply Only£5,500–£8,500

Fitted (Indie)£6,700–£10,000

Warranty12–24 months

Best ForMost owners — best cost/warranty balance

Engine TypeSupply OnlyFitted (Indie)WarrantyBest For

Used Engine£4,000–£6,000£5,200–£7,5001–6 monthsBudget priority; lower-mileage donor

Reconditioned Engine£5,500–£8,500£6,700–£10,00012–24 monthsMost owners — best cost/warranty balance

Rebuilt Engine£7,000–£10,000£8,200–£11,50012–24 monthsLong-term ownership; 5+ year horizon

Main Dealer New£10,000–£14,000£11,500–£15,50024–36 monthsInsurance jobs, warranty claims

Figures above reflect the X156 GLA45 M133.980 generation — a single-generation engine. All pricing is indicative; actual costs vary by mileage, condition and workshop location.

Labour estimate: Fitting a GLA45 engine typically takes 10–14 hours at £80–£120/hr (independent Mercedes-AMG specialist) or £140–£190/hr (London/SE dealer). The transverse-mounted turbo four is reasonably accessible.

→ Compare Mercedes-AMG GLA45 engine prices from UK specialists

Common Problems

1. Turbocharger Stress and Failure (M133)

2. Timing Chain Stretch (M133)

3. Carbon Build-up on Intake Valves (Direct Injection)

4. Oil Leaks (Valve Cover Gasket / Oil Filter Housing)

5. 7G-DCT Gearbox Overheating

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Mercedes-AMG GLA45 — Repair, Buy, or Replace?

Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.

Mercedes-AMG GLA45 — Repair, Buy, or Replace?

Every 320d has a story. Make the right call with clear data, real-world costs, and honest guidance from UK specialists.

Can It Be Repaired?

ProblemRepairable?Typical CostWhen It Makes SenseTurbocharger failure✅ Yes£1,500–£3,500Worth it on any well-maintained GLA45Timing chain stretch✅ Yes£1,500–£3,500Preventative — cheaper than engine replacementCarbon build-up✅ Yes£400–£800Walnut blasting — restores performanceOil leaks✅ Yes£300–£800Simple repair — always worth doing7G-DCT overheating✅ Yes£800–£2,500Viable on any well-maintained exampleMajor internal failure❌ Usually NoEngine replacement requiredReplacement often £5,500–£8,500 — assess vehicle value carefully

Buying This Mercedes-AMG GLA45? Check These First

Buy If

Post-2015 facelift (381PS M133 upgraded) — more power and revised components
Documented turbocharger history — oil feed line recall completed
Documented timing chain history on higher-mileage examples
Full service history with regular oil changes (more frequent than standard is better)
Low-mileage (under 40,000) with documented history

Avoid If

Any whistling or power loss — turbocharger failure risk
Cold-start rattle — timing chain stretch is serious
Transmission overheating warnings — DCT issues can be expensive
Poor service history — the M133 is unforgiving of neglect

Closing Verdict

The GLA45 is a unique proposition — a compact SUV with genuine AMG firepower. The M133 is a remarkable engine, winning multiple International Engine of the Year awards, but it's a high-strung performance unit that demands respect. Turbocharger stress and timing chain stretch are the defining concerns. A post-2015 facelift car with full history is the buy. Maintain the turbo, timing chain and gearbox, and the GLA45 will reward you.

Don't guess.Get the right engine at the right price.

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Buying Checklist

Before you buy a used Mercedes-AMG GLA45 (or before you commit to an engine replacement), check these:

Cold Start — Listen for any rattle on startup (timing chain stretch warning)

Turbo Response — Test acceleration; any whistling, hesitation, or loss of power?

Service History — Check for turbo oil feed line recall completion

Oil Leaks — Any oil smell or spots? Valve cover and oil filter housing gaskets

Transmission Behaviour — Any hard shifts, overheating, or clunks? (7G-DCT)

Carbon Build-up — Any misfires or flat spots? (walnut blasting history?)

Engine Warning Light — Have codes been read? Resolve before buying

MOT History — Check for emissions-related failures

Buy smart. Drive with confidence.

A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.

Buy smart. Drive with confidence.

A few checks today can save thousands tomorrow. Use this checklist to avoid the most common 320d pitfalls.

Engine Codes

This table's rows match Section 1B's Era Map exactly.

M133.980 (2.0L turbo petrol)

Years2014–2015

Power360 PS / 265 kW

2025 Enquiries— (pattern data — premium performance)

Avg. Recon Cost£5,000–£8,500 [PLACEHOLDER]

Engine CodeYearsPower2025 EnquiriesAvg. Recon Cost

M133.980 (2.0L turbo petrol)2014–2015360 PS / 265 kW— (pattern data — premium performance)£5,000–£8,500 [PLACEHOLDER]

M133.980 (2.0L turbo petrol, upgraded)2015–2019381 PS / 280 kW— (pattern data — premium performance)£5,500–£9,000 [PLACEHOLDER]

Technical Specs

M133.980

Displacement1,991 cc

Cylinders4-cylinder inline

Compression Ratio8.6:1

Fuel SystemDirect injection (spray-guided, piezo injectors)

TurbochargerSingle twin-scroll turbocharger (1.8 bar boost)

Additional specifications

Maximum torque (360PS)450 Nm @ 2,250–5,000 rpm

Maximum torque (381PS)475 Nm @ 2,250–5,000 rpm

0–60mph4.8 seconds

Top speed155 mph (limited)

Transmission7-speed AMG SPEEDSHIFT DCT

Drive4MATIC all-wheel drive

Kerb weight1,510–1,555 kg

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Market Intelligence

Most Common Failure

Turbocharger stress/failure (~35% of M133 enquiries) / Timing chain stretch (~30% of enquiries)【PATTERN DATA — specialist workshop consensus】

Average Enquiry Mileage

45,000

miles【PATTERN DATA】

Average Replacement Cost

£6,500

reconditioned, supply only【PLACEHOLDER — confirm vs cost sheet】

Most Requested Engine Code

M133.980 — the GLA45 is a sought-after compact AMG variant【PATTERN DATA】

Peak Enquiry Season

Spring/Summer — performance SUV owners prepare for summer driving【PATTERN DATA】

Regional Demand

South East25%

London20%

South West (15%)【PATTERN DATA — premium performance demographic】

Regional Demand Breakdown

25%South East

20%London

Frequently Asked Questions

All prices are indicative UK market ranges based on historical quote data from our network of engine specialists. Actual costs vary by variant, engine code, damage severity and workshop location. Use our free comparison tool to get tailored quotes. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited-mileage warranty — always confirm terms with your chosen supplier.

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every garage and engine rebuilder in our network is vetted, rated and reviewed by real AMG owners, as part of the Engine Finders network, with specialist knowledge of the M133 hand-built engine and its turbo system requirements.
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see prices, warranty terms and supply & fit options side‑by‑side before you commit, with transparent pricing for this 360–381PS turbo four.
UK Engine Replacement Services for Mercedes-AMG GLA45
supply‑only or full supply & fit available nationwide, covering the X156 GLA45 with specialists who understand this high-performance AMG engine.

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