How much does a BMW 6 Series G32 engine replacement cost in the UK?

A reconditioned G32 engine costs between £2,800 and £8,000 supply-only, depending on the engine -the B47 diesel ranges £2,800–£5,000, the B48 petrol runs £3,200–£5,500, and the B58/B57 six-cylinder engines run £4,500–£8,000. Fitting adds 10–16 hours of labour at £65–£90/hr. Use our calculator for a personalised quote.

Which BMW 6 Series G32 engine is the most reliable?

The B58B30 3.0-litre six-cylinder (640i) is widely regarded as BMW's most reliable modern six-cylinder -proven durability, no major design flaws, and only minor HPFP and wastegate maintenance required. On diesel, the B57D30 (630d/640d) is also highly reliable, with timing chain issues described as 'exceedingly rare.'

What are the common problems with the BMW 6 Series G32?

High-pressure fuel pump (HPFP) failure on the B58 petrol (640i), turbocharger wastegate rattle on the B58, EGR cooler failure on the B47 and B57 diesels (pre-recall units), and DPF blockage on diesels used predominantly for urban driving. The G32 also suffers from air suspension faults on higher-spec models.

Is the BMW 6 Series G32 reliable?

Yes -the G32's modular engines (B48, B58, B47, B57) are significantly more reliable than the N-series engines they replaced. The B58 is considered one of BMW's most reliable engines. For any G32, a thorough engine inspection and maintenance history check are essential, particularly on high-performance variants.

Which BMW 6 Series G32 engine should I avoid?

Early B58 (2017–2019 640i) without documented HPFP or turbo maintenance carries some risk. Also avoid any B47/B57 diesel without documented EGR cooler recall completion. If you must have a B58, choose a 2020+ model with full service history and budget for HPFP inspection at 60,000 miles.

How do I know if my G32 engine needs replacing?

Long cranking or power loss (B58 HPFP), rattling noise at idle (B58 wastegate), coolant loss or overheating (B47/B57 EGR cooler), DPF warning lights on diesel, or persistent rough running on any high-mileage unit are the key warning signs. Use our diagnostic tool for a personalised assessment.

Is it worth replacing a BMW 6 Series G32 engine, or should I scrap the car?

Apply the 70% BMW scrap threshold. Against a well-kept £20,000 G32, a £4,800 B58 recon is 24% of the car's value -safe. Against a tired £12,000 early example, the same recon is 40% -borderline. For sub-£8,000 examples, we'd recommend walking away.

How long do BMW 6 Series G32 engines last?

The B58 and B48 engines can comfortably exceed 150,000 miles with routine maintenance. The B57 diesel is equally durable, with 200,000+ miles achievable with proper servicing. The B47 diesel is also robust, provided the EGR cooler recall work is completed and the car is driven to allow DPF regeneration.

What is the difference between the G32 and other 6 Series generations?

The G32 (2017–2023) is the second-generation BMW Gran Turismo and the first 6 Series Gran Turismo -it replaced the F07 5 Series Gran Turismo (2009–2017) and was not directly replaced in the 6 Series line-up. The G32 is based on the G30 5 Series and offers a raised seating position and a large liftback boot. Unlike the F13/F06 6 Series Coupé/Convertible (which were discontinued in 2018), the G32 is a five-door liftback executive car.

How do I find my BMW 6 Series G32 engine code?

The engine code is listed on the VIN plate, vehicle documentation, and on a sticker under the bonnet. For 2.0 petrol, look for B48B20B (630i). For 3.0 petrol, look for B58B30A (pre-LCI 640i) or B58B30C (LCI 640i). For 2.0 diesel, look for B47D20B (620d). For 3.0 diesel, look for B57D30A (630d pre-LCI) or B57D30B (630d LCI, 640d). Tell us your variant and year, and we'll confirm.

G32 Engine Replacement Cost UK -Compare Quotes

Name: BMW 6 Series G32 UK Engine Enquiry Data 2025
Creator: bmwengines.uk

BMW 6 Series G32 Engine Codes -The Complete Database

Every engine fitted to the G32 6 Series Gran Turismo specifically -from the 2017 launch through the 2020 LCI facelift and the introduction of 48-volt mild-hybrid technology.

Engine CodeFamilyFuelDisplacementPowerYears (G32)Variants (badges)Reliability2025 EnquiriesAvg. Recon Cost

B48B20BB48Petrol, turbo2.0L (1998cc)190 kW (258 hp)2017–2023630i★★★★☆ [PROVISIONAL]-(pattern data)£3,200–£5,500

B58B30AB58Petrol, turbo3.0L (2998cc)250 kW (340 hp)2017–2020640i★★★★☆ [PROVISIONAL]-(pattern data)£4,800–£8,000

B58B30CB58Petrol, turbo MHEV3.0L (2998cc)250 kW (340 hp)2020–2023640i xDrive★★★★☆ [PROVISIONAL]-(pattern data)£4,800–£8,000

B47D20BB47Diesel, turbo2.0L (1995cc)140 kW (190 hp)2018–2020620d★★★★☆ [PROVISIONAL]-(pattern data)£2,800–£5,000

B47D20B (MHEV)B47Diesel, turbo MHEV2.0L (1995cc)140 kW (190 hp)2020–2023620d★★★★☆ [PROVISIONAL]-(pattern data)£2,800–£5,000

B57D30AB57Diesel, turbo3.0L (2993cc)195 kW (265 hp)2017–2020630d★★★★☆ [PROVISIONAL]-(pattern data)£4,500–£7,500

B57D30BB57Diesel, turbo MHEV3.0L (2993cc)210 kW (286 hp)2020–2023630d★★★★☆ [PROVISIONAL]-(pattern data)£4,500–£7,500

B57D30BB57Diesel, turbo3.0L (2993cc)235 kW (320 hp)2017–2020640d xDrive★★★★☆ [PROVISIONAL]-(pattern data)£4,800–£8,000

B57D30B (MHEV)B57Diesel, turbo MHEV3.0L (2993cc)250 kW (340 hp)2020–2023640d xDrive★★★★☆ [PROVISIONAL]-(pattern data)£4,800–£8,000

Engine CodeFuelPowerYearsReliabilityEnquiriesAvg. Recon Cost

B48B20BB48Petrol, turbo190 kW (258 hp)2017–2023★★★★☆ [PROVISIONAL]-(pattern data)£3,200–£5,500

B58B30AB58Petrol, turbo250 kW (340 hp)2017–2020★★★★☆ [PROVISIONAL]-(pattern data)£4,800–£8,000

B58B30CB58Petrol, turbo MHEV250 kW (340 hp)2020–2023★★★★☆ [PROVISIONAL]-(pattern data)£4,800–£8,000

B47D20BB47Diesel, turbo140 kW (190 hp)2018–2020★★★★☆ [PROVISIONAL]-(pattern data)£2,800–£5,000

B47D20B (MHEV)B47Diesel, turbo MHEV140 kW (190 hp)2020–2023★★★★☆ [PROVISIONAL]-(pattern data)£2,800–£5,000

B57D30AB57Diesel, turbo195 kW (265 hp)2017–2020★★★★☆ [PROVISIONAL]-(pattern data)£4,500–£7,500

B57D30BB57Diesel, turbo MHEV210 kW (286 hp)2020–2023★★★★☆ [PROVISIONAL]-(pattern data)£4,500–£7,500

B57D30BB57Diesel, turbo235 kW (320 hp)2017–2020★★★★☆ [PROVISIONAL]-(pattern data)£4,800–£8,000

B57D30B (MHEV)B57Diesel, turbo MHEV250 kW (340 hp)2020–2023★★★★☆ [PROVISIONAL]-(pattern data)£4,800–£8,000

Overview

BMW 6 Series G32 -Overview

The BMW G32 is the second generation of the BMW Gran Turismo range, a 5-door liftback executive car produced from June 2017 to August 2023.

Built on the BMW CLAR platform and based on the G30 5 Series, the G32 succeeded the F07 5 Series Gran Turismo. The engine line-up at launch included the 630i (2.0-litre B48 four-cylinder), 640i (3.0-litre B58 six-cylinder), 630d (3.0-litre B57 six-cylinder diesel), and 640d xDrive (3.0-litre B57 diesel). A 620d (2.0-litre B47 four-cylinder diesel) was added in 2018. The 2020 LCI facelift introduced 48-volt mild-hybrid technology across the range. The G32 was discontinued in August 2023 with no direct successor.

Key Facts

Platform

BMW CLAR (Cluster Architecture)

Predecessor

BMW 5 Series Gran Turismo (F07)

Successor

None (discontinued August 2023)

Sibling body styles

None -G32 is sole Gran Turismo body style

Market Intelligence

The G32 6 Series Gran Turismo is a niche model; enquiries are concentrated on the B58 six-cylinder petrol and B57 diesel engines, with values ranging from £15,000 for early 620d examples to £35,000+ for well-specced 640i/640d models.

BMW 6 Series G32 -Overview

The BMW G32 is the second generation of the BMW Gran Turismo range, a 5-door liftback executive car produced from June 2017 to August 2023.

Built on the BMW CLAR platform and based on the G30 5 Series, the G32 succeeded the F07 5 Series Gran Turismo. The engine line-up at launch included the 630i (2.0-litre B48 four-cylinder), 640i (3.0-litre B58 six-cylinder), 630d (3.0-litre B57 six-cylinder diesel), and 640d xDrive (3.0-litre B57 diesel). A 620d (2.0-litre B47 four-cylinder diesel) was added in 2018. The 2020 LCI facelift introduced 48-volt mild-hybrid technology across the range. The G32 was discontinued in August 2023 with no direct successor.

Key Facts

Platform

BMW CLAR (Cluster Architecture)

Predecessor

BMW 5 Series Gran Turismo (F07)

Successor

None (discontinued August 2023)

Sibling body styles

None -G32 is sole Gran Turismo body style

Market Intelligence

The G32 6 Series Gran Turismo is a niche model; enquiries are concentrated on the B58 six-cylinder petrol and B57 diesel engines, with values ranging from £15,000 for early 620d examples to £35,000+ for well-specced 640i/640d models.

Best & Worst Engines

Best Petrol Overall

B58B30 3.0-litre six-cylinder (640i) -The 340 bhp B58 is widely regarded as BMW's most reliable modern six-cylinder. Delivering 450 Nm of torque and 0-62 in 5.3 seconds, it offers genuine performance with proven durability. Mild-hybrid versions (2020+) add efficiency without compromising reliability.

“”

Who it's for: buyers who want the sweet spot of performance, refinement, and reliability.

Best Diesel Overall

B57D30 3.0-litre six-cylinder (630d/640d) -The 265–340 bhp B57 six-cylinder diesel delivers effortless torque (620–680 Nm), excellent refinement, and genuine durability. Timing chain issues are "exceedingly rare" compared to earlier BMW diesels.

“”

Who it's for: high-mileage buyers who want six-cylinder refinement without petrol running costs.

Highest Risk

B58B30 (early 640i) -While generally reliable, the B58 has documented high-pressure fuel pump (HPFP) failures and turbocharger wastegate rattle. HPFP failure causes long cranking, power loss, and misfires.

“”

Who it's for: buyers who accept the premium and keep the car under warranty.

Most Expensive Failure

B58B30 (640i)

“The 3.0-litre six-cylinder is the most expensive engine in the G32 line-up to replace, with reconditioned units costing £4,800–£8,000. HPFP replacement is a labour-intensive job -£800–£1,500 at a specialist -and turbocharger wastegate rattle can lead to full turbo replacement.”

Who it's for:

Best Value

B47D20 2.0-litre diesel (620d) -The 190 bhp B47 diesel offers the best balance of performance, economy, and running costs. It's the most economical G32 engine, parts are widely available, and the recon cost is the lowest in the range. Post-recall EGR cooler units are reliable.

“”

Who it's for: buyers who prioritise running costs.

Most Overlooked

B48B20 2.0-litre petrol (630i) -Often overshadowed by the six-cylinder 640i, the 258 bhp B48 delivers genuine performance -0-62 in 6.3 seconds -with the economy of a four-cylinder and the proven reliability of BMW's modular engine family.

“”

Who it's for: buyers who want petrol refinement without the six-cylinder's fuel consumption.

Best Petrol Overall

B58B30 3.0-litre six-cylinder (640i) -The 340 bhp B58 is widely regarded as BMW's most reliable modern six-cylinder. Delivering 450 Nm of torque and 0-62 in 5.3 seconds, it offers genuine performance with proven durability. Mild-hybrid versions (2020+) add efficiency without compromising reliability.

“”

Who it's for: buyers who want the sweet spot of performance, refinement, and reliability.

Best Diesel Overall

B57D30 3.0-litre six-cylinder (630d/640d) -The 265–340 bhp B57 six-cylinder diesel delivers effortless torque (620–680 Nm), excellent refinement, and genuine durability. Timing chain issues are "exceedingly rare" compared to earlier BMW diesels.

“”

Who it's for: high-mileage buyers who want six-cylinder refinement without petrol running costs.

Highest Risk

B58B30 (early 640i) -While generally reliable, the B58 has documented high-pressure fuel pump (HPFP) failures and turbocharger wastegate rattle. HPFP failure causes long cranking, power loss, and misfires.

“”

Who it's for: buyers who accept the premium and keep the car under warranty.

Most Expensive Failure

B58B30 (640i)

“The 3.0-litre six-cylinder is the most expensive engine in the G32 line-up to replace, with reconditioned units costing £4,800–£8,000. HPFP replacement is a labour-intensive job -£800–£1,500 at a specialist -and turbocharger wastegate rattle can lead to full turbo replacement.”

Who it's for:

Best Value

B47D20 2.0-litre diesel (620d) -The 190 bhp B47 diesel offers the best balance of performance, economy, and running costs. It's the most economical G32 engine, parts are widely available, and the recon cost is the lowest in the range. Post-recall EGR cooler units are reliable.

“”

Who it's for: buyers who prioritise running costs.

Most Overlooked

B48B20 2.0-litre petrol (630i) -Often overshadowed by the six-cylinder 640i, the 258 bhp B48 delivers genuine performance -0-62 in 6.3 seconds -with the economy of a four-cylinder and the proven reliability of BMW's modular engine family.

“”

Who it's for: buyers who want petrol refinement without the six-cylinder's fuel consumption.

BMW 6 Series G32 -Ownership Economics

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

B48B20B (630i)60k–120kCooling system, water pump£300–£800£3,200–£5,500

Best Petrol -reliable four-cylinder

B58B30A/C (640i)40k–80kHPFP, wastegate rattle£800–£1,500£4,800–£8,000

Premium Choice -performance costs

B47D20B (620d)60k–120kEGR cooler, DPF£500–£1,500£2,800–£5,000

Best Diesel -most economical

B57D30A/B (630d)80k–150kDPF blockage, EGR valve£500–£1,500£4,500–£7,500

Solid Choice -six-cylinder refinement

B57D30B (640d)80k–150kDPF, EGR, turbo wear£800–£2,000£4,800–£8,000

Premium Diesel -effortless torque

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

B48B20B (630i)60k–120kCooling system, water pump£300–£800£3,200–£5,500

Best Petrol -reliable four-cylinder

B58B30A/C (640i)40k–80kHPFP, wastegate rattle£800–£1,500£4,800–£8,000

Premium Choice -performance costs

B47D20B (620d)60k–120kEGR cooler, DPF£500–£1,500£2,800–£5,000

Best Diesel -most economical

B57D30A/B (630d)80k–150kDPF blockage, EGR valve£500–£1,500£4,500–£7,500

Solid Choice -six-cylinder refinement

B57D30B (640d)80k–150kDPF, EGR, turbo wear£800–£2,000£4,800–£8,000

Premium Diesel -effortless torque

The G32 rule

A £4,800–£8,000 B58 recon against a £12,000–£18,000 early G32 sits at 27–67% of the car's value. On a sub-£12,000 example, that brushes our 70% BMW threshold -we'll honestly tell you to walk away. Against a well-kept £20,000+ example, the same recon drops to a routine 24–40% -a repair decision, not a financial one. Value the car first.

Key Takeaways

Which G32 Costs Least To Own?
B47 620d -cheapest recon, best economy.
Which G32 Costs Most To Own?
B58 640i -HPFP and turbo repairs add cost.
Which G32 Is Best Value?
B47 620d -the sweet spot between economy, performance, and running costs.

Common Problems

01

B58

High-Pressure Fuel Pump (HPFP) Failure

Affected models:

G32 640i (2017–2020, B58B30A).

B58 High-Pressure Fuel Pump (HPFP) Failure

Typical failure mileage:

40,000–80,000 miles.

Root cause:

The high-pressure fuel pump on B58 engines can fail, leading to long cranking times before the engine starts, noticeable loss of power, engine misfires, and even stalling. The issue can be intermittent, making diagnosis challenging.

Tiered Cost Table

Preventative (Repair)

Dealer

Specialist

£1,200–£2,000

£800–£1,500

HPFP replacement, fuel system flush

Catastrophic (Replacement)

Dealer

Specialist

£5,500–£9,000

£4,800–£8,000

Full reconditioned engine

Our Recommendation

If your G32 640i exhibits long cranking or power loss, have the HPFP inspected immediately -an £800–£1,500 preventative repair is cheaper than the £4,800–£8,000 replacement that follows if ignored.

Compare B58 engine prices for your G32

02

B58

Turbocharger Wastegate Rattle

Affected models:

G32 640i (B58B30A/C), all years.

Typical failure mileage:

50,000–100,000 miles.

Root cause:

The wastegate components on B58 engines can wear over time, leading to a distinct rattling noise, especially noticeable at low RPMs or when the engine is idling. While it may not immediately affect performance, it can worsen and potentially lead to turbocharger failure.

Tiered Cost Table

Preventative (Repair)

Dealer

Specialist

£1,000–£2,000

£800–£1,500

Wastegate actuator replacement

Catastrophic (Replacement)

Dealer

Specialist

£3,500–£5,500

£2,500–£4,000

Complete turbocharger assembly replacement

Our Recommendation

On any G32 640i, listen for wastegate rattle at idle -an £800–£1,500 preventative repair is cheaper than the £2,500–£4,000 turbo replacement that follows if ignored.

Compare B58 turbo prices for your G32

03

B47/B57

Diesel EGR Cooler & DPF Issues

Affected models:

G32 620d (B47D20B), 630d/640d (B57D30A/B).

Typical failure mileage:

60,000–120,000 miles.

Root cause:

The EGR cooler on B47 and B57 diesel engines can develop internal coolant leaks, leading to coolant loss. DPF blockage is also common on cars used predominantly for urban driving, with fault codes indicating DPF sensor failure.

Tiered Cost Table

Preventative (Repair)

Dealer

Specialist

£800–£1,500 (EGR recall work free if applicable)

£500–£1,200

EGR cooler replacement, DPF regeneration

Catastrophic (Replacement)

Dealer

Specialist

£4,000–£6,000

£2,800–£5,000

Full reconditioned engine

Our Recommendation

On any G32 diesel, check the EGR cooler recall status immediately and ensure regular motorway runs for DPF regeneration -a £500–£1,200 preventative repair is cheaper than the £2,800–£5,000 replacement that follows if ignored.

Compare B47/B57 engine prices for your G32

G32 Engine Replacement Costs -By Engine and Condition

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

630iB48B20B£1,500–£3,000£3,200–£5,500£4,500–£7,00010–14 hrs

640iB58B30A/C£2,500–£4,500£4,800–£8,000£6,500–£10,00012–16 hrs

620dB47D20B£1,200–£2,800£2,800–£5,000£4,000–£6,50010–14 hrs

630dB57D30A/B£2,500–£4,500£4,500–£7,500£6,000–£9,50012–16 hrs

640d xDriveB57D30B£2,800–£5,000£4,800–£8,000£6,500–£10,00012–16 hrs

Core Variants

Diesel & Petrol Lineup

Diesel Variants

620d630d640d xDrive

Petrol Variants

630i640i640i xDrive

Scope note: All variants listed are G32 6 Series Gran Turismo only. The 620d was added in 2018. The 2020 LCI facelift introduced 48-volt mild-hybrid technology across the range. The 640i and 640d are available with rear-wheel drive or xDrive all-wheel drive.

Diesel & Petrol Lineup

Diesel Variants

620d630d640d xDrive

Petrol Variants

630i640i640i xDrive

Scope note: All variants listed are G32 6 Series Gran Turismo only. The 620d was added in 2018. The 2020 LCI facelift introduced 48-volt mild-hybrid technology across the range. The 640i and 640d are available with rear-wheel drive or xDrive all-wheel drive.

Market Intelligence

Most Requested E90 Engines (2025)

1.1. B57D30 3.0 Diesel (630d/640d)
2.2. B58B30 3.0 Petrol (640i)
3.3. B47D20 2.0 Diesel (620d)

Most Requested E90 Variants

1.1. 640i (3.0 petrol)
2.2. 630d (3.0 diesel)
3.3. 620d (2.0 diesel)

Average E90 Replacement Cost

£2,800–£8,000 supply-only [BMW-QUOTE]

Most Common E90 Failures

1.1. B58 HPFP failure
2.2. B58 turbocharger wastegate rattle
3.3. B47/B57 EGR cooler & DPF issues

Live Feed

VehicleLocationIssueEnquiries

BMW 6 Series 640i

G32 (B58)

Birmingham

Long cranking, HPFP fault

4

enquiries

BMW 6 Series 630d

G32 (B57)

London

DPF warning light, regeneration issue

3

enquiries

BMW 6 Series 620d

G32 (B47)

Manchester

Coolant loss, EGR cooler

2

enquiries

Updated Monthly

FAQ

BMW 3 Series E90 rear three-quarter view

Why UK BMW 6 Series G32 Owners Trust bmwengines.uk

Trusted G32 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real G32 owners, as part of the Engine Finders network.
Compare G32 Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit.
UK Engine Replacement Services for G32
covering every variant from 620d to 640i xDrive, with supply-only or full supply & fit available nationwide.

Find the best BMW 6 Series G32 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare BMW 6 Series G32 Engine Prices on EnginesMarket

Why UK BMW 6 Series G32 Owners Trust bmwengines.uk

Trusted G32 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real G32 owners, as part of the Engine Finders network.
Compare G32 Engine Replacement Companies
see prices, warranty terms and supply & fit options side-by-side before you commit.
UK Engine Replacement Services for G32
covering every variant from 620d to 640i xDrive, with supply-only or full supply & fit available nationwide.

Find the best BMW 6 Series G32 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.

Compare BMW 6 Series G32 Engine Prices on EnginesMarket

BMW 6 Series G32 Engines -The Complete UK Guide

BMW 6 Series G32 Engine Codes -The Complete Database

BMW 6 Series G32 -Overview

BMW 6 Series G32 -Overview

Best &amp; Worst Engines

BMW 6 Series G32 -Ownership Economics

Common Problems

G32 Engine Replacement Costs -By Engine and Condition

Diesel &amp; Petrol Lineup

Diesel &amp; Petrol Lineup

Market Intelligence

FAQ

Why UK BMW 6 Series G32 Owners Trust bmwengines.uk

Why UK BMW 6 Series G32 Owners Trust bmwengines.uk

Best & Worst Engines

Diesel & Petrol Lineup

Diesel & Petrol Lineup