How much does a Mercedes GLS X167 engine replacement cost in the UK?

A reconditioned X167 engine typically costs £2,800–£18,000 supply only, depending on engine — the OM654 2.0-litre diesel sits at £2,800–£4,500, while the M177 V8 in the AMG GLS 63 is the most expensive at £12,000–£18,000. Fitting adds £650–£1,500 depending on engine complexity and specialist rates. Use our calculator for a personalised figure.

What are the common problems with the Mercedes GLS X167?

48V battery and cooling system issues on the M256 straight-six petrol, cooling system leaks and valve stem seal wear on the M176/M177 V8s (GLS 580, GLS 63, Maybach), AdBlue and EGR system issues on the OM656 diesel, and air suspension failures on high-mileage examples. The V8's hot-vee design is particularly sensitive to cooling system neglect.

Is the Mercedes GLS X167 reliable?

Overall reliability is good for a modern full-size luxury SUV. The OM656 diesel and M256 petrol straight-sixes are proven, durable units. The main caveats are the V8's cooling system and valve stem seals (M176/M177), the 48V system on the M256, and the AdBlue system on the OM656 — all are known issues that should be budgeted for. The 2023 facelift addressed some early production issues.

Which Mercedes GLS X167 engine should I avoid?

No engine outright — but the M176 V8 (GLS 580) and M177 V8 (AMG GLS 63, Maybach GLS 600) have documented cooling system and valve stem seal issues that can be very expensive to address. If you're on a budget, the straight-six GLS 450 or GLS 400 d are the sweet spots. Avoid any V8 without documented service history — these engines are sensitive to oil quality and cooling system maintenance.

How do I know if my X167 engine needs replacing?

48V system warnings or coolant loss on the M256 (water pump/48V battery), persistent coolant loss or overheating on the V8 (cooling system leaks), blue smoke on startup on the V8 (valve stem seals), AdBlue warning lights or reduced performance on the diesel (AdBlue/EGR issues), or the air suspension compressor running excessively (suspension leaks) are the key warning signs. Use our diagnostic calculator for a personalised assessment.

Is it worth replacing a Mercedes GLS X167 engine, or should I scrap the car?

Depends on the car's value. Against a well-kept £45,000 GLS 450, a £3,500–£6,000 recon is 8–13% of the car's value — viable. Against a tired £25,000 GLS 400 d, a £3,500–£6,000 recon is 14–24% — still viable. For an AMG GLS 63, a £70,000+ car justifies a £12,000–£18,000 recon; a £45,000 example makes it a much harder call. Our 70% Mercedes-Benz threshold is the line — most X167s sit comfortably above it.

How long do Mercedes GLS X167 engines last?

The OM656 straight-six diesel can exceed 200,000+ miles with proper AdBlue system care and regular servicing. The M256 straight-six petrol can reach 150,000–200,000 miles with prompt 48V battery and cooling system attention. The M176/M177 V8s can last 150,000+ miles but typically require valve stem seal replacement at 40,000–80,000 miles, which is a significant cost.

What is the difference between the X167, X166, and X164 GLS?

The X164 (2006–2012) was the first-generation GL-Class. The X166 (2012–2019) was the second-generation GL/GLS-Class (the GLS name was introduced with the 2016 facelift). The X167 (2019–present) is the third-generation GLS (this page), built on the MHA platform with mild-hybrid technology, updated styling, and a more luxurious interior. Engines are generally not interchangeable between generations.

How do I find my Mercedes GLS X167 engine code?

Listed on the VIN plate (under the bonnet or on the driver's door pillar), on the engine block, and in the vehicle documentation. Tell us your variant (GLS 450, GLS 580, AMG GLS 63, Maybach GLS 600, GLS 350 d, GLS 400 d) and approximate model year (pre-2023 or post-2023 facelift) and we'll identify it — 25+ vetted Mercedes specialists will confirm it for free.

X167 Engine Replacement Cost UK

Mercedes GLS X167 Engine Codes — The Complete Database

Every engine fitted to the X167 GLS specifically — including pre-facelift M256/M176 units, the 2023 facelift updates, and the range-topping AMG and Maybach variants.

Engine CodeFamilyFuelDisplacementPowerYears (X167)Variants (badges)Reliability2025 EnquiriesAvg. Recon Cost

M256.930M256Petrol, mild-hybrid3.0L (2999cc)367 PS / 270 kW (+22 PS EQ Boost)2019–2023GLS 450 4MATIC★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£3,500–£6,000 [PLACEHOLDER — confirm vs cost sheet]

M176.980M176Petrol, mild-hybrid4.0L (3982cc)489 PS / 360 kW2019–2023GLS 580 4MATIC★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£6,000–£10,000 [PLACEHOLDER — confirm vs cost sheet]

M176.980M176Petrol, mild-hybrid4.0L (3982cc)517 PS / 380 kW2023–presentGLS 580 4MATIC (facelift)★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£6,500–£11,000 [PLACEHOLDER — confirm vs cost sheet]

M177.980M177Petrol, mild-hybrid4.0L (3982cc)612 PS / 450 kW2019–presentAMG GLS 63 4MATIC+★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£12,000–£18,000 [PLACEHOLDER — confirm vs cost sheet]

M177.980M177Petrol, mild-hybrid4.0L (3982cc)557 PS / 410 kW2019–presentMaybach GLS 600 4MATIC★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£10,000–£16,000 [PLACEHOLDER — confirm vs cost sheet]

OM656.929OM656Diesel2.9L (2925cc)330 PS / 243 kW2019–presentGLS 400 d 4MATIC★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£3,500–£6,000 [PLACEHOLDER — confirm vs cost sheet]

OM656OM656Diesel2.9L (2925cc)286 PS / 210 kW2019–presentGLS 350 d 4MATIC★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£3,200–£5,500 [PLACEHOLDER — confirm vs cost sheet]

OM654OM654Diesel2.0L (1950cc)313 PS / 230 kW2020–presentGLS 400 EQ Boost (select markets)★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£2,800–£4,500 [PLACEHOLDER — confirm vs cost sheet]

Engine CodeFuelPowerYearsReliabilityEnquiriesAvg. Recon Cost

M256.930M256Petrol, mild-hybrid367 PS / 270 kW (+22 PS EQ Boost)2019–2023★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£3,500–£6,000 [PLACEHOLDER — confirm vs cost sheet]

M176.980M176Petrol, mild-hybrid489 PS / 360 kW2019–2023★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£6,000–£10,000 [PLACEHOLDER — confirm vs cost sheet]

M176.980M176Petrol, mild-hybrid517 PS / 380 kW2023–present★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£6,500–£11,000 [PLACEHOLDER — confirm vs cost sheet]

M177.980M177Petrol, mild-hybrid612 PS / 450 kW2019–present★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£12,000–£18,000 [PLACEHOLDER — confirm vs cost sheet]

M177.980M177Petrol, mild-hybrid557 PS / 410 kW2019–present★★★☆☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£10,000–£16,000 [PLACEHOLDER — confirm vs cost sheet]

OM656.929OM656Diesel330 PS / 243 kW2019–present★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£3,500–£6,000 [PLACEHOLDER — confirm vs cost sheet]

OM656OM656Diesel286 PS / 210 kW2019–present★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£3,200–£5,500 [PLACEHOLDER — confirm vs cost sheet]

OM654OM654Diesel313 PS / 230 kW2020–present★★★★☆ [PROVISIONAL — pending dedicated Engine Page]— (pattern data)£2,800–£4,500 [PLACEHOLDER — confirm vs cost sheet]

Overview

Mercedes GLS X167 — Overview

The X167 is the third-generation Mercedes-Benz GLS, the flagship full-size luxury SUV produced since October 2019.

It replaces the X166 GLS and is built on the MHA platform (a variant of the MRA architecture). The engine range spans M256 straight-six petrols with EQ Boost mild-hybrid technology, M176 V8 petrols in the GLS 580, M177 V8s in the AMG GLS 63 and Maybach GLS 600, plus OM656 straight-six diesels. A 2023 facelift brought power increases and updated engines.

Key Facts

Platform

Mercedes MHA (Modular High Architecture)

Predecessor

Mercedes-Benz GLS (X166)

Successor

None (current generation)

Sibling body styles in this generation

None (GLS is a standalone model)

Market Intelligence

The X167 GLS generated UK engine enquiries in 2025 [PATTERN DATA], with the M256 petrol six and OM656 diesel six remaining the most commonly discussed among specialists.

Mercedes GLS X167 — Overview

The X167 is the third-generation Mercedes-Benz GLS, the flagship full-size luxury SUV produced since October 2019.

It replaces the X166 GLS and is built on the MHA platform (a variant of the MRA architecture). The engine range spans M256 straight-six petrols with EQ Boost mild-hybrid technology, M176 V8 petrols in the GLS 580, M177 V8s in the AMG GLS 63 and Maybach GLS 600, plus OM656 straight-six diesels. A 2023 facelift brought power increases and updated engines.

Key Facts

Platform

Mercedes MHA (Modular High Architecture)

Predecessor

Mercedes-Benz GLS (X166)

Successor

None (current generation)

Sibling body styles in this generation

None (GLS is a standalone model)

Market Intelligence

The X167 GLS generated UK engine enquiries in 2025 [PATTERN DATA], with the M256 petrol six and OM656 diesel six remaining the most commonly discussed among specialists.

Best & Worst Engines

Thin-Data Summary

“Thin-Data Fallback mode — one paragraph: The X167's most dependable engine is the OM656 2.9-litre straight-six diesel (GLS 400 d, 330 PS) — Mercedes' latest-generation straight-six diesel, offering effortless torque, excellent refinement, and proven durability. The M256 3.0-litre straight-six petrol (GLS 450, 367 PS) is the best petrol option — smooth, refined, and with EQ Boost mild-hybrid assistance adding 22 PS and 250 Nm of torque. The M176 V8 in the GLS 580 (489 PS) offers effortless V8 performance but carries significantly higher running costs. The M177 V8 in the AMG GLS 63 (612 PS) is a masterpiece — epic performance but eye-watering maintenance bills. Avoid any car without documented service history, and be cautious of the V8 engines' cooling systems — the hot-vee design generates significant heat that can affect ancillaries.”

Who it's for:

Thin-Data Summary

“Thin-Data Fallback mode — one paragraph: The X167's most dependable engine is the OM656 2.9-litre straight-six diesel (GLS 400 d, 330 PS) — Mercedes' latest-generation straight-six diesel, offering effortless torque, excellent refinement, and proven durability. The M256 3.0-litre straight-six petrol (GLS 450, 367 PS) is the best petrol option — smooth, refined, and with EQ Boost mild-hybrid assistance adding 22 PS and 250 Nm of torque. The M176 V8 in the GLS 580 (489 PS) offers effortless V8 performance but carries significantly higher running costs. The M177 V8 in the AMG GLS 63 (612 PS) is a masterpiece — epic performance but eye-watering maintenance bills. Avoid any car without documented service history, and be cautious of the V8 engines' cooling systems — the hot-vee design generates significant heat that can affect ancillaries.”

Who it's for:

Mercedes GLS X167 — Ownership Economics

EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership Verdict

M256.930 (GLS 450)60k–100k48V battery, water pump, ignition coils£500–£1,200£3,500–£6,000

Best Petrol — smooth straight-six, proven M256

M176.980 (GLS 580 489 PS)50k–90kCooling system, valve stem seals, engine mounts£800–£1,500£6,000–£10,000

V8 Power — effortless but costly to maintain

M176.980 (GLS 580 517 PS facelift)50k–90kCooling system, valve stem seals£800–£1,500£6,500–£11,000

Facelift V8 — more power, same caveats

M177.980 (AMG GLS 63 612 PS)30k–70kValve stem seals, coolant pipes, engine mounts£2,000–£3,500£12,000–£18,000

AMG Icon — epic engine, epic bills

M177.980 (Maybach GLS 600)30k–70kValve stem seals, cooling system£1,500–£3,000£10,000–£16,000

Luxury V8 — refined but costly

OM656.929 (GLS 400 d 330 PS)80k–130kAdBlue system, EGR cooler, injector wear£400–£900£3,500–£6,000

Best Diesel — the torque king

OM656 (GLS 350 d 286 PS)80k–130kAdBlue system, EGR cooler£400–£800£3,200–£5,500

Solid Diesel — proven straight-six

OM654 (GLS 400 EQ Boost)60k–100kAdBlue system, injector wear£400–£800£2,800–£4,500

Modern Four — efficient but less torque

EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership Verdict

M256.930 (GLS 450)60k–100k48V battery, water pump, ignition coils£500–£1,200£3,500–£6,000

Best Petrol — smooth straight-six, proven M256

M176.980 (GLS 580 489 PS)50k–90kCooling system, valve stem seals, engine mounts£800–£1,500£6,000–£10,000

V8 Power — effortless but costly to maintain

M176.980 (GLS 580 517 PS facelift)50k–90kCooling system, valve stem seals£800–£1,500£6,500–£11,000

Facelift V8 — more power, same caveats

M177.980 (AMG GLS 63 612 PS)30k–70kValve stem seals, coolant pipes, engine mounts£2,000–£3,500£12,000–£18,000

AMG Icon — epic engine, epic bills

M177.980 (Maybach GLS 600)30k–70kValve stem seals, cooling system£1,500–£3,000£10,000–£16,000

Luxury V8 — refined but costly

OM656.929 (GLS 400 d 330 PS)80k–130kAdBlue system, EGR cooler, injector wear£400–£900£3,500–£6,000

Best Diesel — the torque king

OM656 (GLS 350 d 286 PS)80k–130kAdBlue system, EGR cooler£400–£800£3,200–£5,500

Solid Diesel — proven straight-six

OM654 (GLS 400 EQ Boost)60k–100kAdBlue system, injector wear£400–£800£2,800–£4,500

Modern Four — efficient but less torque

The X167 rule

A £3,500–£6,000 recon on a sub-£30,000 X167 sits at 12–20% of the car's value — viable on most examples. Against a £10,000 engine bill on a GLS 580, the car's value determines the decision — a £50,000 GLS 580 justifies a £6,000–£10,000 recon; a £30,000 example makes it a much harder call. For an AMG GLS 63, a £70,000+ car justifies a £12,000–£18,000 recon. Our 70% Mercedes-Benz threshold is the line — most X167s sit comfortably above it.

Key Takeaways

Which X167 Costs Least To Own?
GLS 350 d (OM656) — proven straight-six diesel, excellent economy, cheapest to maintain.
Which X167 Costs Most To Own?
AMG GLS 63 (M177) — V8 complexity, specialist-only work, eye-watering parts prices.
Which X167 Is Best Value?
GLS 450 (M256.930) — 367 PS straight-six, reliable, refined, without V8 running costs.

Common Problems

01

M256

Straight-Six 48V Battery & Cooling System Issues

Affected models:

X167 GLS 450 (M256.930 petrol straight-six).

M256 Straight-Six 48V Battery & Cooling System Issues

Typical failure mileage:

60,000–100,000 miles.

Root cause:

The M256's 48V mild-hybrid system — including the lithium-ion battery, integrated starter generator (ISG), and cooling system — can develop issues. The water pump and 48V battery are the most common failure points, with the battery typically requiring replacement around 80,000–100,000 miles. The system's complexity means specialist diagnostics are essential.

Tiered Cost Table

Preventative (Repair)

Dealer

Specialist

£1,200–£2,000

£700–£1,200

48V battery health check, water pump replacement

Catastrophic (Replacement)

Dealer

Specialist

£4,000–£6,000

£2,800–£4,500

Full 48V system overhaul including ISG and battery

Our Recommendation

Have the 48V battery and cooling system inspected at every service after 60,000 miles — £700–£1,200 in preventative work is cheap insurance against the £2,800+ bill that follows if the system fails completely. Use the correct Mercedes-approved 48V battery and coolant spec.

Compare M256 engine prices for your X167 GLS

02

M176/M177

V8 Cooling System & Valve Stem Seal Wear

Affected models:

X167 GLS 580 (M176 V8), AMG GLS 63 (M177 V8), Maybach GLS 600 (M177 V8).

M176/M177 V8 Cooling System & Valve Stem Seal Wear

Typical failure mileage:

40,000–80,000 miles.

Root cause:

The M176 and M177's hot-vee design — turbos located in the V of the engine — generates significant heat, which can cause cooling system components (water pump, thermostat housing, coolant pipes) to fail prematurely. Valve stem seals can also harden and fail, leading to oil consumption and blue smoke on startup.

Tiered Cost Table

Preventative (Repair)

Dealer

Specialist

£1,500–£2,500

£1,000–£1,800

Replace water pump, thermostat, and coolant pipes

Catastrophic (Replacement)

Dealer

Specialist

£8,000–£12,000

£5,000–£8,000

Full engine rebuild if valve stem seal failure has caused damage

Our Recommendation

Check coolant levels regularly and look for signs of leaks around the water pump and thermostat housing — £1,000–£1,800 in preventative work is cheap insurance against the £5,000+ bill that follows an overheat. If your V8 is smoking on startup or using oil between services, have the valve stem seals inspected immediately.

Compare M176/M177 engine prices for your X167 GLS

03

OM656

Diesel AdBlue & EGR System Issues

Affected models:

X167 GLS 350 d, GLS 400 d (OM656 diesel variants).

Typical failure mileage:

80,000–130,000 miles.

Root cause:

The OM656's AdBlue system — including NOx sensors, heaters, and the EGR cooler — can fail, triggering warning lights and reduced performance. This is common on cars used for short urban journeys where the AdBlue system doesn't complete its regeneration cycles.

Tiered Cost Table

Preventative (Repair)

Dealer

Specialist

£600–£1,000

£400–£800

NOx sensor replacement, AdBlue system flush

Catastrophic (Replacement)

Dealer

Specialist

£2,500–£4,500

£1,800–£3,200

Full AdBlue system overhaul including EGR cooler

Our Recommendation

Use the car regularly and give it a good motorway run to keep the AdBlue and EGR systems clear — £400–£800 in preventative work is cheap insurance against the £1,800+ bill that follows if the system fails completely. Use premium diesel and quality AdBlue.

Compare OM656 engine prices for your X167 GLS diesel

04

X167

Air Suspension System Failure

Affected models:

All X167 GLS variants (Airmatic suspension).

Typical failure mileage:

60,000–100,000 miles.

Root cause:

The X167's Airmatic air suspension system — including air springs, compressors, and valve blocks — can develop leaks and fail over time. While not an engine failure, it's one of the most common X167 enquiries and a significant ownership cost for a 2.4-tonne luxury SUV.

Tiered Cost Table

Preventative (Repair)

Dealer

Specialist

£1,000–£1,800

£600–£1,200

Replace air springs and check compressor

Catastrophic (Replacement)

Dealer

Specialist

£3,000–£5,000

£2,000–£3,500

Full air suspension overhaul including compressor and valve block

Our Recommendation

Have the air suspension inspected at every service after 60,000 miles — £600–£1,200 in preventative work is a fraction of the £2,000+ bill if the compressor fails and damages the valve block. Listen for the compressor running excessively — it's a sign of a leak.

Compare X167 air suspension repair quotes

X167 Engine Replacement Costs — By Engine and Condition

VariantEngine CodeUsed (Supply)Reconditioned (Supply)Rebuilt (Supply)Labour Hours

GLS 450 4MATICM256.930£1,800–£3,200£3,500–£6,000£5,000–£8,00012–16 hrs

GLS 580 4MATIC (489 PS)M176.980£3,000–£5,500£6,000–£10,000£8,000–£13,00016–20 hrs

GLS 580 4MATIC (517 PS facelift)M176.980£3,500–£6,000£6,500–£11,000£9,000–£14,00016–20 hrs

AMG GLS 63 4MATIC+M177.980£6,000–£10,000£12,000–£18,000£16,000–£22,00018–24 hrs

Maybach GLS 600 4MATICM177.980£5,000–£9,000£10,000–£16,000£14,000–£20,00018–24 hrs

GLS 350 d 4MATICOM656£1,600–£3,000£3,200–£5,500£5,000–£8,00012–16 hrs

GLS 400 d 4MATICOM656.929£1,800–£3,200£3,500–£6,000£5,500–£8,50012–16 hrs

GLS 400 EQ BoostOM654£1,400–£2,500£2,800–£4,500£4,500–£7,00010–14 hrs

Core Variants

Diesel Variants

GLS 350 d 4MATICGLS 400 d 4MATIC

Petrol Variants

GLS 450 4MATICGLS 580 4MATICAMG GLS 63 4MATIC+Maybach GLS 600 4MATIC

Scope note: All variants listed are X167 GLS only. The GLS is a standalone model with no sibling body styles in this generation. The X167 was launched in October 2019, with a 2023 facelift bringing updated power outputs and styling changes. The Maybach GLS 600 is the ultra-luxury variant.

Core Variants

Diesel Variants

GLS 350 d 4MATICGLS 400 d 4MATIC

Petrol Variants

GLS 450 4MATICGLS 580 4MATICAMG GLS 63 4MATIC+Maybach GLS 600 4MATIC

Scope note: All variants listed are X167 GLS only. The GLS is a standalone model with no sibling body styles in this generation. The X167 was launched in October 2019, with a 2023 facelift bringing updated power outputs and styling changes. The Maybach GLS 600 is the ultra-luxury variant.

Market Intelligence

Most Requested E90 Engines (2025)

Most Requested E90 Variants

Average E90 Replacement Cost

Most Common E90 Failures

FAQ

BMW 3 Series E90 rear three-quarter view

Why UK Mercedes GLS X167 Owners Trust MercedesEngines.uk

Trusted X167 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real Mercedes owners, as part of the Engine Finders network. We only work with specialists who understand the X167's MHA platform, 48V systems, and V8 intricacies.
Compare X167 Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit. Whether you need a reconditioned OM656 or a used M177, we show you the real market.
UK Engine Replacement Services for X167
covering every variant from GLS 450 to AMG GLS 63 and Maybach GLS 600, with supply-only or full supply & fit available nationwide through our vetted specialist network.

Find the best Mercedes GLS X167 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare Mercedes GLS X167 Engine Prices on EnginesMarket

Why UK Mercedes GLS X167 Owners Trust MercedesEngines.uk

Trusted X167 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real Mercedes owners, as part of the Engine Finders network. We only work with specialists who understand the X167's MHA platform, 48V systems, and V8 intricacies.
Compare X167 Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit. Whether you need a reconditioned OM656 or a used M177, we show you the real market.
UK Engine Replacement Services for X167
covering every variant from GLS 450 to AMG GLS 63 and Maybach GLS 600, with supply-only or full supply & fit available nationwide through our vetted specialist network.

Find the best Mercedes GLS X167 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare Mercedes GLS X167 Engine Prices on EnginesMarket

Mercedes GLS X167 Engines — The Complete UK Guide

Mercedes GLS X167 Engine Codes — The Complete Database

Mercedes GLS X167 — Overview

Mercedes GLS X167 — Overview

Best & Worst Engines

Mercedes GLS X167 — Ownership Economics

Common Problems

X167 Engine Replacement Costs — By Engine and Condition

Core Variants

Core Variants

Market Intelligence

FAQ

Why UK Mercedes GLS X167 Owners Trust MercedesEngines.uk

Why UK Mercedes GLS X167 Owners Trust MercedesEngines.uk