How much does a BMW X7 G07 engine replacement cost in the UK?

A reconditioned G07 engine typically costs £4,000–£12,000 supply only, depending on engine -the B58 six-cylinder sits at £4,000–£7,500, while the S68 V8 can reach £7,000–£12,000. Fitting adds £780–£1,560. Use our calculator for a personalised figure.

What are the common problems with the BMW X7 G07?

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), cooling system and turbo management issues on the S68 V8 (M60i), and -unrelated to the engine -the occasional electronic gremlins and air suspension component wear.

Is the BMW X7 G07 reliable?

The G07 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 S68 V8 in the M60i is still unproven long-term. Overall, the G07 appears to be a dependable flagship luxury SUV.

Which BMW X7 G07 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. If you don't need the V8's performance, the B58 is the smarter choice. The S68 in the M60i is still too new to have a proven reliability track record.

How do I know if my G07 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. Use our diagnostic calculator for a personalised assessment.

Is it worth replacing a BMW X7 G07 engine, or should I scrap the car?

On a G07, replacement almost always makes sense. Against a £50,000 G07, a £5,000 B58 recon is 10% of the car's value -well within our 70% BMW threshold. Even against a lower-value example, the G07's high retained value means replacement is financially viable. On a V8 example, the calculus is similar -the car's value justifies the replacement cost.

How long do BMW X7 G07 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 S68 V8 is still too new to have established longevity data.

What is the difference between the G07 and the G05?

The G07 is the BMW X7 -the brand's flagship full-size SUV with three-row seating, built on the same CLAR platform as the G05 X5. The G05 is the smaller, two-row X5. Both share many engines, but the G07 is significantly larger, heavier, and more expensive. The G07 also has unique interior packaging and a more luxurious specification.

How do I find my BMW X7 G07 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, M60i, etc.) and approximate registration date and we'll identify it -20+ vetted specialists will confirm it for free.

BMW X7 G07SUV2018–present

BMW X7 G07 Engines — The Complete UK Guide

Every engine fitted to the flagship X7 G07 — from the B57 diesel six to the B58 petrol six, the N63 V8 and the S68-powered M60i.

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

Backed by verified specialist data.

Explore G07 Engines

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Engine Database

BMW X7 G07 Engine Codes — The Complete Database

Every engine fitted to BMW's flagship full-size luxury SUV — from the six-cylinder petrol and diesel units to the V8s and the S68-powered M60i.

Engine CodeFuelPowerYearsReliabilityEnquiries (2025)Avg. Recon Cost

B57D30AB57DieselTurbo211–265 bhp2018–2020★★★★☆PATTERN DATA—(pattern data)£4,000–£7,000[PLACEHOLDER]

B57D30T3B57DieselTwin-turbo340 bhp2020–2022★★★★☆PATTERN DATA—(pattern data)£4,500–£7,500[PLACEHOLDER]

B57D30BB57DieselTwin-turbo340–352 bhp2022–present★★★★☆PATTERN DATA—(pattern data)£4,500–£7,500[PLACEHOLDER]

B58B30CB58PetrolTurbo333–340 bhp2018–2022★★★★★PATTERN DATA—(pattern data)£4,000–£7,000[PLACEHOLDER]

B58B30PB58PetrolMild-hybrid380 bhp2022–present★★★★★PATTERN DATA—(pattern data)£4,500–£7,500[PLACEHOLDER]

N63B44DN63PetrolTwin-turbo462 bhp2018–2019★★★☆☆PATTERN DATA—(pattern data)£6,000–£10,000[PLACEHOLDER]

N63B44T3N63PetrolTwin-turbo530 bhp2019–2022★★★☆☆PATTERN DATA—(pattern data)£6,500–£11,000[PLACEHOLDER]

N63B44T3N63PetrolTwin-turbo530 bhp2022–2023★★★☆☆PATTERN DATA—(pattern data)£6,500–£11,000[PLACEHOLDER]

S68B44S68PetrolTwin-turbo530 bhp2023–present———

Overview

BMW X7 G07 — Overview

The G07 is the first generation of the BMW X7, the brand's flagship full-size luxury SUV. Unveiled online on 17 October 2018 and entering production later that year at BMW's Spartanburg plant in South Carolina, the G07 introduced BMW's largest-ever SUV to the market.

Built on the CLAR platform shared with the G05 X5 and G11 7 Series, the X7 offers three-row seating and a range of six-cylinder and V8 engines. A facelift (LCI) was introduced in 2022, bringing updated engines, a split-headlight design and mild-hybrid technology.

Key Facts

PlatformBMW CLAR (Cluster Architecture)
PredecessorNone — first BMW X7
SuccessorCurrent model — no successor announced
Sibling Body Styles in this GenerationG07 (5-door SUV only)

Market Intelligence

As a current-generation flagship SUV (2018–present), the G07 is still establishing its long-term reliability profile — but the B58 engine is already well-proven, while the N63 V8 remains the most complex option in the range.

04Best & Worst Engines

Best & Worst Engines

Thin-Data Summary

The G07's engine range is modern, powerful and broadly dependable. The B58 3.0-litre straight-six (xDrive40i, 2018–present) is the standout — 333–380 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 — 211–352 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 462–530 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, addressing some of the earlier engine's weaknesses. The B58 is the sensible choice; the B57 is for high-mileage drivers; the V8s demand deeper pockets.

Thin-Data Summary

BMW X7 G07
Ownership Economics

Engine

Typical Mileage

Common Major Failure

Repair Cost (Specialist)

Replacement Cost (Recon)

Ownership Verdict

B57 3.0 Diesel (30d/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 (40i)40k–80kWater pump, cooling system£500–£1,200£4,000–£7,500

Best Overall -the B58 is a modern legend

N63 4.4 V8 (50i/M50i)30k–60kValve stem seals, turbo coolant lines£1,500–£4,000£6,000–£11,000

Most Expensive -hot-vee V8 complexity

S68 4.4 V8 (M60i)30k–60kCooling system, turbo coolant lines£1,500–£3,500£7,000–£12,000

Improved -updated design, still complex

Engine

Typical Mileage

Common Major Failure

Repair Cost (Specialist)

Replacement Cost (Recon)

Ownership Verdict

B57 3.0 Diesel (30d/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 (40i)40k–80kWater pump, cooling system£500–£1,200£4,000–£7,500

Best Overall -the B58 is a modern legend

N63 4.4 V8 (50i/M50i)30k–60kValve stem seals, turbo coolant lines£1,500–£4,000£6,000–£11,000

Most Expensive -hot-vee V8 complexity

S68 4.4 V8 (M60i)30k–60kCooling system, turbo coolant lines£1,500–£3,500£7,000–£12,000

Improved -updated design, still complex

The G07 rule

A £4,000–£7,500 B58 recon against a £50,000 G07 sits at 8–15% of the car's value -well within our 70% BMW threshold. Against a £80,000 example, the same recon drops to 5–9% -a routine maintenance decision. On a G07, replacement almost always makes sense. The V8 costs are higher but still proportional to the car's value.

Key Takeaways

Which G07 Costs Least To Own?
B58 xDrive40i -simpler than the V8, lower running costs.
Which G07 Costs Most To Own?
N63 M50i -hot-vee V8 with expensive heat-related failures.
Which G07 Is Best Value?
B58 xDrive40i -six-cylinder luxury without the V8 bills.

Common Problems

B58/B57

Cooling System & Water Pump Failure

Affected models:

G07 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 G07 -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 G07

N63

Hot-Vee V8 Heat-Related Failures

Affected models:

G07 xDrive50i (2018–2019), M50i (2019–2022) -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, 2019–2022) improved some aspects but retained the hot-vee architecture.

Our Recommendation

If you own an N63-powered G07, 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 G07 M50i

S68

Cooling System & Turbo Management (M60i)

Affected models:

G07 M60i (2023–present, S68 engine).

Typical failure mileage:

30,000–60,000 miles (estimated).

Root cause:

The S68 is BMW's updated V8, replacing the N63 in the M60i. While it addresses some of the N63's weaknesses, it retains the hot-vee turbo layout and complex cooling system. Early reports suggest improved reliability, but the V8 remains a complex engine with higher running costs than the six-cylinder options.

Our Recommendation

The S68 is still too new to have a proven long-term reliability record. If you own an M60i, maintain the cooling system meticulously and monitor oil consumption. A £500–£1,000 preventative cooling service is far cheaper than a £7,000+ engine replacement.

Compare S68 engine prices for your G07 M60i

G07
Engine Replacement Costs -By Engine and Condition

Variant

Engine Code

Used (Supply)

Reconditioned (Supply)

Rebuilt (Supply)

Labour Hours

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

xDrive40d (pre-LCI)B57D30T3£2,800–£5,000£4,500–£7,500£6,000–£9,50012–16 hrs

xDrive40d (LCI)B57D30B£3,000–£5,200£4,500–£7,500£6,000–£9,50012–16 hrs

xDrive40i (pre-LCI)B58B30C£2,500–£4,500£4,000–£7,000£5,500–£8,50012–16 hrs

xDrive40i (LCI)B58B30P£2,800–£5,000£4,500–£7,500£6,000–£9,50012–16 hrs

xDrive50iN63B44D£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

M60i (pre-S68)N63B44T3£4,000–£6,500£6,500–£11,000£9,000–£14,00016–22 hrs

M60i (S68)S68B44£4,500–£7,000£7,000–£12,000£9,500–£15,00018–24 hrs

Diesel & Petrol Lineup

Diesel Variants

Petrol Variants

Scope note: All variants listed are G07-generation X7 only (2018–present). The X7 is only available as a 5-door SUV.

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

Scope note: All variants listed are G07-generation X7 only (2018–present). The X7 is only available as a 5-door SUV.

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 X7 G07 Engines — The Complete UK Guide

BMW X7 G07 Engine Codes — The Complete Database

BMW X7 G07 — Overview

Best & Worst Engines

BMW X7 G07 Ownership Economics

Common Problems

G07Engine Replacement Costs -By Engine and Condition

Diesel & Petrol Lineup

Market Intelligence

Diesel & Petrol Lineup

Market Intelligence

FAQ

Why UK BMW X7 G07 OwnersTrust bmwengines.uk

BMW X7 G07
Ownership Economics

G07
Engine Replacement Costs -By Engine and Condition

Why UK BMW X7 G07 Owners
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