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Mercedes AMG GLA 45 Specialists

Mercedes Benz AMG GLA 45 Engine Replacement Compare Prices & Get Quotes

Get quotes today from trusted UK Mercedes Benz AMG GLA 45 engine specialists. Compare prices on reconditioned, rebuilt and used M133 and M139 hand-built 2.0-litre turbocharged engines - supply & fit available nationwide for both X156 and H247 generations.

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Mercedes Benz AMG GLA 45 Engine
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  • Usedfrom £2,800
  • Reconditionedfrom £4,500
  • Common codesM133.980, M139.980
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Variant History

Mercedes Benz AMG GLA 45 Engine History & Specs at a Glance

The Mercedes-AMG GLA 45 represents the pinnacle of compact SUV performance, powered by two generations of hand-built AMG four-cylinder engines - the M133 in the first-generation X156 (2014-2020) and the M139 in the second-generation H247 (2020-present). Both engines were, at their respective launches, the most powerful four-cylinder production engines in the world.

Mercedes Benz AMG GLA 45
  1. 2014

    AMG GLA 45 launched with X156 generation, M133.980 2.0L turbo, 355hp (360 PS), 450Nm torque, 7-speed AMG SPEEDSHIFT DCT, 4MATIC AWD, 0-100km/h in 4.8 seconds

  2. 2015

    M133 upgraded to 381hp (280kW) and 475Nm torque via reconfigured valve assembly, timing and turbocharging

  3. 2015

    2019 - Service campaign initiated for turbocharger oil feed line contamination

  4. 2020

    All-new H247 GLA 45 launched with M139.980 2.0L turbo, 382hp (standard) and 421hp (S variant) - world's most powerful four-cylinder production engine

  5. 2020

    M139 introduced with 180-degree rotated layout, twin fuel injection, 9-speed AMG SPEEDSHIFT DCT, 4MATIC+ with drift mode

Every hand-built AMG engine fitted to the Mercedes Benz GLA 45 is covered below, with UK rebuilt pricing and known failure points from real owner experience.

Engine Codes & Pricing

Mercedes Benz AMG GLA 45 Engine Codes Specifications & Replacement Cost

Find your exact engine code, specs and UK replacement cost guide.

M133.980 — 2.0L Turbo Petrol (2014-2020) engine

M133.980 — 2.0L Turbo Petrol (2014-2020)

Power Output
355-381 hp (265-280 kW) @ 6,000 rpm
Torque
450-475 Nm @ 2,250-5,000 rpm
Displacement
1,991cc
Configuration
Inline-4, twin-scroll turbocharger (1.8 bar / 26.1 psi boost), direct injection via piezo injectors, forged pistons, NANOSLIDE cylinder coating, hand-built at AMG
Years Fitted
2014-2020

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Common Problems

Mercedes Benz AMG GLA 45 Engine Problems Repair Cost vs Replacement

The Mercedes-AMG GLA 45 is powered by two generations of hand-built AMG four-cylinder engines - the M133 and M139 - both remarkable engineering achievements that have developed well-documented reputations for specific, predictable failures. Turbocharger failure due to oil feed line contamination dominates M133 replacement demand, while M139 owners report cooling system strain and oil consumption concerns. Every rebuilt engine supplied through EnginesMarket includes upgraded components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty. Below we break down the most common AMG GLA 45 engine failures, what they cost to fix, and when replacement is the smarter financial decision.

Common failure points and repair options

M133 Turbocharger Failure

Affected
Mercedes Benz AMG GLA 45 (M133.980, 2014-2020)
Typical failure mileage
40,000 - 80,000 miles
Root cause
The M133 engine runs up to 1.8 bar (26.1 psi) of boost, creating extreme heat in the turbocharger housing. Insufficient cool-down periods after hard driving can coke the oil feed lines, restricting oil flow to the turbo bearings. A Mercedes Service Campaign was initiated for GLA 45 turbocharger failure due to contamination of the oil feed line. The result is progressive bearing wear, shaft play, and eventual turbo failure with metallic debris entering the intercooler.

Repair options

Repair tierDealer priceSpecialist price
Minor - Turbocharger Cartridge Replacement£2,500-£3,500£1,500-£2,200
Major - Full Turbo Unit & Intercooler Flush£3,500-£5,000£2,200-£3,200
Full Replacement - Rebuilt Engine£9,000-£14,000£4,500-£9,000
Our recommendation
On an AMG GLA 45, do not cut corners on turbo maintenance. If you hear whistling or notice oil consumption above 1 litre per 1,000 miles, have the turbo inspected immediately. A specialist turbo replacement is painful but far less painful than a full engine rebuild. Also, fit a turbo timer or religiously idle the engine for 60 seconds after hard driving - it doubles turbo bearing life on the M133.
-> Compare rebuilt M133 Mercedes Benz AMG GLA 45 engine prices

M133 / M139 Timing Chain Stretch

Affected
Mercedes Benz AMG GLA 45 (M133.980, 2014-2020; M139.980, 2020-present)
Typical failure mileage
60,000 - 120,000 miles
Root cause
The timing chain tensioner can lose oil pressure retention when parked, allowing chain slack and producing a rattling noise on cold start. If ignored, the chain can stretch beyond acceptable tolerances, causing timing drift and potentially leading to valve-to-piston contact. This affects both M133 and M139 engines.

Repair options

Repair tierDealer priceSpecialist price
Minor - Tensioner Only£600-£1,000£350-£600
Major - Full Timing Chain Set£2,500-£4,000£1,500-£2,500
Full Replacement - Rebuilt Engine£9,000-£14,000£4,500-£12,000
Our recommendation
At the first sign of rattling on cold start, have the timing chain tensioner inspected immediately - ignoring it can lead to catastrophic engine failure. Mercedes timing chain problems typically manifest between 40,000 and 80,000 miles. On higher-mileage M133 and M139 engines, a full rebuilt unit with upgraded timing components eliminates this risk entirely.
-> Compare rebuilt M133 / M139 Mercedes Benz AMG GLA 45 engine prices

M133 Oil Leaks & Carbon Buildup

Affected
Mercedes Benz AMG GLA 45 (M133.980, 2014-2020)
Typical failure mileage
50,000 - 100,000 miles
Root cause
Oil leaks from the valve cover gasket and oil filter housing are common on higher-mileage M133 engines. Additionally, the direct-injection system causes carbon buildup on intake valves, leading to misfires, flat spots, and reduced performance.

Repair options

Repair tierDealer priceSpecialist price
Minor - Valve Cover Gasket Replacement£500-£800£300-£500
Minor - Walnut Blasting (Carbon Cleaning)£500-£800£300-£500
Full Replacement - Rebuilt Engine£9,000-£14,000£4,500-£9,000
Our recommendation
The M133's carbon buildup is an inherent trait of direct-injection performance engines - budget for walnut blasting every 50,000 miles to maintain peak performance. Oil leaks from valve cover gaskets should be addressed promptly; oil dripping onto hot exhaust components can create smoke and, in extreme cases, fire risk.
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M139 Cooling System Strain & Oil Consumption

Affected
Mercedes Benz AMG GLA 45 (M139.980, 2020-present)
Typical failure mileage
30,000 - 70,000 miles
Root cause
The M139 produces up to 421hp from just 2.0 litres - extreme output that generates significant heat. The engine runs hot when pushed, with temperatures reaching 100-105°C under hard use. Some owners report higher-than-normal oil consumption, necessitating more frequent top-ups.

Repair options

Repair tierDealer priceSpecialist price
Minor - Cooling System Inspection & Thermostat£400-£700£250-£450
Major - Radiator & Coolant System Replacement£1,500-£2,500£900-£1,500
Full Replacement - Rebuilt Engine£10,000-£16,000£5,500-£12,000
Our recommendation
The M139's extreme power output demands meticulous cooling system maintenance. If you notice the engine running consistently hot or oil consumption increasing, have the cooling system inspected immediately. The M139's high-output nature means it requires more frequent oil checks than standard engines - check oil levels every 1,000 miles and top up as needed.
-> Compare rebuilt M139 Mercedes Benz AMG GLA 45 engine prices

Don't Let Engine Failure Write Off Your Mercedes Benz AMG GLA 45

A failed hand-built AMG engine doesn't have to mean the end of your GLA 45. Whether you're dealing with an M133 turbocharger failure, timing chain stretch, oil leaks, or M139 cooling system strain, EnginesMarket makes it simple to compare prices from trusted UK Mercedes Benz AMG GLA 45 specialists. Every rebuilt engine in our network includes upgraded components designed to address the original failure point, a minimum 12-month unlimited mileage warranty, and nationwide delivery with supply & fit options available.

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FAQ

Mercedes Benz AMG GLA 45 Engine ReplacementFrequently Asked Questions

Everything Mercedes Benz AMG GLA 45 owners usually ask before choosing a rebuilt, reconditioned or used replacement engine.

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Comparing quotes for your Mercedes Benz AMG GLA 45 engine replacement is completely free and carries no obligation - enter your registration above, receive tailored prices from UK specialists who know the M133 and M139 hand-built AMG engines inside out, and get back on the road with confidence. Every rebuilt engine is backed by a minimum 12-month unlimited mileage warranty.

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