How much does a BMW X5 G05 engine replacement cost in the UK?

A reconditioned G05 engine typically costs £2,800–£16,000 supply only, depending on engine -the B47 diesel sits at £2,800–£5,000, while the S63 V8 in the X5 M can reach £9,000–£16,000. Fitting adds £650–£1,560. Use our calculator for a personalised figure.

What are the common problems with the BMW X5 G05?

Water pump and cooling system failures on all B-series engines (B58, B57), valve stem seal and turbo coolant line issues on the N63 V8 (xDrive50i/M50i), crank hub and rod bearing issues on the S63/S68 V8s (X5 M/M60i), battery degradation and cooling system issues on the PHEV models (xDrive45e/xDrive50e), and -unrelated to the engine -the occasional electronic gremlins and suspension component wear.

Is the BMW X5 G05 reliable?

The G05 is still relatively new, but early indications are positive. The B58 and B57 engines have strong reputations from their use across the BMW range. The N63 V8 has been improved but remains complex. The S63/S68 V8s in the M variants demand meticulous maintenance. The PHEV variants are still unproven long-term. Overall, the G05 appears to be a dependable modern luxury SUV.

Which BMW X5 G05 engine should I avoid?

No engine is inherently problematic, but the N63 V8 (xDrive50i/M50i) is more complex and expensive to maintain than the six-cylinder options -budget accordingly. An S63-powered X5 M without documented crank hub and rod bearing history is also a risky purchase. If you don't need the V8's performance, the B58 is the smarter choice.

How do I know if my G05 engine needs replacing?

Overheating with no obvious external leak (cooling system failure), blue smoke on start-up (N63 valve stem seals), persistent check engine lights, or rough idle are the key warning signs. For PHEV models, reduced electric range or charging issues may indicate battery problems. Use our diagnostic calculator for a personalised assessment.

Is it worth replacing a BMW X5 G05 engine, or should I scrap the car?

On a G05, replacement almost always makes sense. Against a £35,000 G05, a £5,000 B58 recon is 14% of the car's value -well within our 70% BMW threshold. Even against a lower-value example, the G05's high retained value means replacement is financially viable. On a V8 or M variant, the calculus is similar -the car's value justifies the replacement cost.

How long do BMW X5 G05 engines last?

The B58 can exceed 150,000–200,000 miles with proper maintenance. The B57 diesel is similarly durable. The N63 V8 can also reach high mileage but requires meticulous cooling system and valve train maintenance. The S63/S68 V8s are robust but require crank hub and rod bearing preventative work. PHEV battery life is expected to exceed 100,000 miles but will degrade over time.

What is the difference between the G05 and the F15?

The G05 is the fourth-generation X5 (2018–present), built on the CLAR platform with a range of B-series and N-series engines, a 48V mild-hybrid system, and more advanced technology. The F15 is the third-generation X5 (2013–2018), built on a previous platform with a range of N-series engines. The G05 is significantly more refined and technologically advanced.

How do I find my BMW X5 G05 engine code?

Listed on the VIN plate and vehicle documentation; block stamping is visible on the engine itself. Tell us your variant (xDrive40i, xDrive30d, M50i, X5 M, etc.) and approximate registration date and we'll identify it -20+ vetted specialists will confirm it for free.

BMW X5 G05SUV2018–present

BMW X5 G05 Engines — The Complete UK Guide

Every engine fitted to the fourth-generation X5 G05 — from the B57 diesel six to the B58 petrol six, the N63 V8 and the S68-powered X5 M.

Real UK replacement costs, honest failure data, and the hot-vee V8 risks that define this generation.

Backed by verified specialist data.

Explore G05 Engines

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12+Engine Codes
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Engine Database

BMW X5 G05 Engine Codes — The Complete Database

Every engine fitted to the fourth-generation X5 — from the four-cylinder diesel to the six-cylinder petrol and diesel units, the V8s and the plug-in hybrid options.

Engine CodeFuelPowerYearsReliabilityEnquiries (2025)Avg. Recon Cost

B47D20B47DieselTurbo228 bhp2018–present★★★★☆PATTERN DATA—(pattern data)£2,800–£5,000[PLACEHOLDER]

B57D30AB57DieselTurbo261–265 bhp2018–present★★★★☆PATTERN DATA—(pattern data)£4,000–£7,000[PLACEHOLDER]

B57D30T3B57DieselTwin-turbo335–352 bhp2018–present★★★★☆PATTERN DATA—(pattern data)£4,500–£7,500[PLACEHOLDER]

B48B20B48PetrolTurbo261 bhp2019–present★★★★☆PATTERN DATA—(pattern data)£2,500–£4,500[PLACEHOLDER]

B58B30M1B58PetrolTurbo329–335 bhp2018–2023★★★★★PATTERN DATA—(pattern data)£4,000–£7,000[PLACEHOLDER]

B58B30PB58PetrolMild-hybrid375–381 bhp2023–present★★★★★PATTERN DATA—(pattern data)£4,000–£7,000[PLACEHOLDER]

B58B30M1 (PHEV)B58Petrol PHEV389 bhp(system)2019–2023★★★★☆PATTERN DATA—(pattern data)£5,000–£8,500[PLACEHOLDER]

B58X (PHEV)B58Petrol PHEV483 bhp(system)2023–present★★★★☆PATTERN DATA—(pattern data)£5,500–£9,000[PLACEHOLDER]

N63B44M3N63PetrolTwin-turbo456 bhp2018–2020★★★☆☆PATTERN DATA—(pattern data)£6,000–£10,000[PLACEHOLDER]

N63B44T3N63PetrolTwin-turbo523 bhp2020–2023★★★☆☆PATTERN DATA—(pattern data)£6,500–£11,000[PLACEHOLDER]

S68B44S68PetrolTwin-turbo523+ bhp2023–present★★★★☆PATTERN DATA—(pattern data)£7,000–£12,000[PLACEHOLDER]

S63B44T4S63PetrolTwin-turbo591–617 bhp2020–2023★★★★☆PATTERN DATA—(pattern data)£9,000–£15,000[PLACEHOLDER]

S68B44 (M)S68PetrolTwin-turbo617+ bhp2024–present★★★★☆PATTERN DATA——

Overview

BMW X5 G05 — Overview

The G05 is the fourth generation of the BMW X5, unveiled online on 6 June 2018 and entering production in August 2018 as the successor to the F15 X5. Built on the Cluster Architecture (CLAR) platform shared with the G11 7 Series and G30 5 Series, the G05 introduced a range of new engines — including the B58 replacing the N55, and the S63-powered X5 M — along with a 48V mild-hybrid system on later models.

A facelift (LCI) entered production in March 2023, bringing updated B58, B57 and S68 engines.

Key Facts

PlatformBMW CLAR (Cluster Architecture)
PredecessorBMW X5 F15
SuccessorCurrent model — no successor announced
Sibling Body Styles in this GenerationG05 (standard wheelbase), G18 (long-wheelbase, China), F95 (X5 M)

Market Intelligence

As a current-generation model (2018–present), the G05 is still establishing its long-term reliability profile — but the B58 engine is already developing a reputation as one of BMW's most dependable modern six-cylinders, while the N63 V8 remains the most complex option.

04Best & Worst Engines

Best & Worst Engines

Thin-Data Summary

The G05's engine range is modern, efficient and broadly dependable. The B58 3.0-litre straight-six (xDrive40i, 2018–present) is the standout — 329–381 bhp, smooth power delivery, and a reputation for bulletproof reliability that has made it one of BMW's most dependable modern engines. The B57 3.0-litre diesel six (xDrive30d/xDrive40d) is the torque king — 261–352 bhp and up to 700 Nm of effortless pulling power, with mild-hybrid assistance on later models. The N63 4.4-litre twin-turbo V8 (xDrive50i/M50i) delivers 456–523 bhp but retains the hot-vee architecture that can lead to heat-related issues on high-mileage examples. The S68 in the M60i (2023–present) replaces the N63 with an updated design, while the S63 in the X5 M offers 591–617 bhp but demands meticulous maintenance. The plug-in hybrids (xDrive45e, xDrive50e) combine the B58 with an electric motor for 389–483 bhp system output. If you're buying a G05, the B58 petrol is the sensible choice; the B57 diesel is for high-mileage drivers; the N63/S63 V8s demand deeper pockets.

Thin-Data Summary

BMW X5 G05
Ownership Economics

Engine

Typical Mileage

Common Major Failure

Repair Cost (Specialist)

Replacement Cost (Recon)

Ownership Verdict

B47 2.0 Diesel (xDrive25d)40k–80kEGR cooler, DPF, timing chain (rare)£600–£1,500£2,800–£5,000

Best Diesel 4-Cyl -efficient, proven B47

B57 3.0 Diesel (xDrive30d/40d)40k–80kEGR cooler, DPF, AdBlue, turbo£800–£2,000£4,000–£7,500

Best Diesel -six-cylinder torque and reliability

B58 3.0 Petrol (xDrive40i)40k–80kWater pump, cooling system£500–£1,200£4,000–£7,000

Best Overall -the B58 is a modern legend

B58 PHEV (xDrive45e/50e)30k–60kBattery degradation, cooling system£1,000–£3,000£5,000–£9,000

Solid Choice -hybrid complexity

N63 4.4 V8 (xDrive50i/M50i)30k–60kValve stem seals, turbo coolant lines£1,500–£4,000£6,000–£11,000

Most Expensive -hot-vee V8 complexity

S63/S68 V8 (X5 M/M60i)30k–60kCrank hub, rod bearings, cooling£2,500–£6,000£7,000–£15,000

High Performance -outstanding but costly

Engine

Typical Mileage

Common Major Failure

Repair Cost (Specialist)

Replacement Cost (Recon)

Ownership Verdict

B47 2.0 Diesel (xDrive25d)40k–80kEGR cooler, DPF, timing chain (rare)£600–£1,500£2,800–£5,000

Best Diesel 4-Cyl -efficient, proven B47

B57 3.0 Diesel (xDrive30d/40d)40k–80kEGR cooler, DPF, AdBlue, turbo£800–£2,000£4,000–£7,500

Best Diesel -six-cylinder torque and reliability

B58 3.0 Petrol (xDrive40i)40k–80kWater pump, cooling system£500–£1,200£4,000–£7,000

Best Overall -the B58 is a modern legend

B58 PHEV (xDrive45e/50e)30k–60kBattery degradation, cooling system£1,000–£3,000£5,000–£9,000

Solid Choice -hybrid complexity

N63 4.4 V8 (xDrive50i/M50i)30k–60kValve stem seals, turbo coolant lines£1,500–£4,000£6,000–£11,000

Most Expensive -hot-vee V8 complexity

S63/S68 V8 (X5 M/M60i)30k–60kCrank hub, rod bearings, cooling£2,500–£6,000£7,000–£15,000

High Performance -outstanding but costly

The G05 rule

A £4,000–£7,000 B58 recon against a £35,000 G05 sits at 11–20% of the car's value -well within our 70% BMW threshold. Against a £60,000 example, the same recon drops to 7–12% -a routine maintenance decision. On a G05, replacement almost always makes sense. The V8 and PHEV costs are higher but still proportional to the car's value.

Key Takeaways

Which G05 Costs Least To Own?
B58 xDrive40i -simpler than the V8, lower running costs.
Which G05 Costs Most To Own?
N63 M50i -hot-vee V8 with expensive heat-related failures.
Which G05 Is Best Value?
B58 xDrive40i -six-cylinder performance without the V8 bills.

Common Problems

B58/B57

Cooling System & Water Pump Failure

Affected models:

G05 xDrive40i (B58), xDrive30d/40d (B57) -all models with B-series engines.

Typical failure mileage:

40,000–80,000 miles.

Root cause:

BMW's B-series engines use an electric water pump that has a finite service life. The water pump can fail without warning, causing overheating. The cooling system also has plastic components (thermostat housing, coolant pipes) that can become brittle with age and heat cycling. The B58's integrated cooling system is more complex than earlier BMW engines.

Our Recommendation

Replace the water pump proactively at 60,000–80,000 miles on any B58 or B57-powered G05 -a £400–£800 preventative job is far cheaper than a £4,000+ engine replacement. Monitor the temperature gauge and investigate any coolant loss immediately.

Compare B58/B57 engine prices for your G05

N63

Hot-Vee V8 Heat-Related Failures

Affected models:

G05 xDrive50i (2018–2020), M50i (2020–2023) -N63 engine.

Typical failure mileage:

30,000–60,000 miles.

Root cause:

The N63's "hot-vee" design places the turbochargers inside the V of the engine, generating significant heat. This leads to premature failure of valve stem seals (causing blue smoke on start-up), turbo coolant lines, and timing chain stretch. The N63TU3 (M50i, 2020–2023) improved some aspects but retained the hot-vee architecture.

Our Recommendation

If you own an N63-powered G05, budget for valve stem seal replacement as a preventative measure -a £500–£1,200 investment is far cheaper than the £6,500–£11,000 engine replacement that follows a failure. Monitor oil consumption and investigate any blue smoke on start-up immediately.

Compare N63 engine prices for your G05 M50i

S63/S68

Crank Hub & Rod Bearings (X5 M)

Affected models:

G05 X5 M, X5 M Competition (2020–2023, S63), X5 M Competition LCI (2024–present, S68).

Typical failure mileage:

30,000–60,000 miles.

Root cause:

The S63's crank hub can spin on the crankshaft, causing timing to slip and potentially catastrophic engine damage. The rod bearings can also wear prematurely, particularly on cars that have been tracked or driven hard. The S68 (2023–present) has addressed some of these issues, but the high-performance V8 remains a complex engine.

Our Recommendation

If you own an X5 M, budget for a crank hub fix and rod bearing replacement as preventative maintenance. A £1,500–£3,500 investment is far cheaper than the £9,000–£15,000 engine replacement that follows a failure. Use the correct oil and warm the engine properly before hard driving.

Compare S63/S68 engine prices for your X5 M

PHEV

Battery & Cooling System (xDrive45e/xDrive50e)

Affected models:

G05 xDrive45e (2019–2023), xDrive50e (2023–present).

Typical failure mileage:

30,000–60,000 miles.

Root cause:

The plug-in hybrid system uses a lithium-ion battery pack that can degrade over time, particularly if regularly fast-charged or exposed to extreme temperatures. The cooling system for the battery and electric motor is more complex than on conventional engines and can develop leaks. The xDrive50e (2023–present) has a larger battery and more powerful electric motor.

Our Recommendation

If you own a PHEV G05, have the battery health checked at every major service. Avoid frequent fast-charging if possible, and keep the battery between 20% and 80% charge for daily use. A £300–£600 preventative check is far cheaper than a £7,000+ battery replacement.

Compare PHEV battery prices for your G05

G05
Engine Replacement Costs -By Engine and Condition

Variant

Engine Code

Used (Supply)

Reconditioned (Supply)

Rebuilt (Supply)

Labour Hours

xDrive25dB47D20£1,500–£2,800£2,800–£5,000£4,000–£6,50010–14 hrs

xDrive30dB57D30A£2,500–£4,500£4,000–£7,000£5,500–£8,50012–16 hrs

xDrive40dB57D30T3£2,800–£5,000£4,500–£7,500£6,000–£9,50012–16 hrs

sDrive40i / xDrive40i (pre-LCI)B58B30M1£2,500–£4,500£4,000–£7,000£5,500–£8,50012–16 hrs

xDrive40i (LCI)B58B30P£3,000–£5,000£4,500–£7,500£6,000–£9,50012–16 hrs

xDrive45eB58 PHEV£3,500–£6,000£5,000–£8,500£7,000–£11,00014–18 hrs

xDrive50eB58X PHEV£4,000–£6,500£5,500–£9,000£7,500–£12,00014–18 hrs

xDrive50iN63B44M3£3,500–£5,500£6,000–£10,000£8,000–£13,00016–22 hrs

M50iN63B44T3£4,000–£6,500£6,500–£11,000£9,000–£14,00016–22 hrs

M60iS68B44£4,500–£7,000£7,000–£12,000£9,500–£15,00018–24 hrs

X5 M / X5 M Competition (pre-LCI)S63B44T4£5,000–£8,000£9,000–£15,000£12,000–£20,00018–24 hrs

X5 M Competition (LCI)S68B44 (M)£5,500–£8,500£9,500–£16,000£13,000–£22,00018–24 hrs

Diesel & Petrol Lineup

Diesel Variants

Petrol Variants

Scope note: All variants listed are G05-generation X5 only (2018–present). The G18 long-wheelbase variant (China market) shares most engines but is covered on its own Generation Page. The F95 X5 M is included as the high-performance variant.

Market Intelligence

Most Requested Engines (2025)

Most Requested Variants

Average Replacement Cost

Most Common Failures

Most Requested Engines (2025)

Most Requested Variants

Average Replacement Cost

Most Common Failures

Most Requested Engines (2025)

Most Requested Variants

Average Replacement Cost

Most Common Failures

Diesel & Petrol Lineup

Diesel Variants

Petrol Variants

Market Intelligence

Most Requested Engines (2025)

Most Requested Variants

Average Replacement Cost

Most Common Failures

Most Requested Engines (2025)

Most Requested Variants

Average Replacement Cost

Most Common Failures

Most Requested Engines (2025)

Most Requested Variants

Average Replacement Cost

Most Common Failures

FAQ

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BMW X5 G05 Engines — The Complete UK Guide

BMW X5 G05 Engine Codes — The Complete Database

BMW X5 G05 — Overview

Best & Worst Engines

BMW X5 G05 Ownership Economics

Common Problems

G05Engine Replacement Costs -By Engine and Condition

Diesel & Petrol Lineup

Market Intelligence

Diesel & Petrol Lineup

Market Intelligence

FAQ

Why UK BMW X5 G05 OwnersTrust bmwengines.uk

BMW X5 G05
Ownership Economics

G05
Engine Replacement Costs -By Engine and Condition

Why UK BMW X5 G05 Owners
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