How much does a BMW 7 Series E32 engine replacement cost in the UK?

A reconditioned E32 engine typically costs £2,500–£9,000 supply only [BMW-QUOTE], depending on the engine -the M30 straight-six sits at £2,500–£5,000, the M60 V8 at £2,500–£6,000, and the M70 V12 at £5,000–£9,000. Fitting adds £650–£1,300. Use our calculator for a personalised figure.

Which E32 engine is the most reliable?

The M30B34 (735i) is the E32's most dependable engine -211 bhp of silky, naturally-aspirated straight-six with a proven track record of 200,000+ miles. No VANOS, no complex electronics, just pure six-cylinder refinement. The M30B30 (730i) is similarly robust.

What are the common problems with the BMW 7 Series E32?

The M60 V8 (740i, 730i V8) suffers from Nikasil bore lining failure -high-sulphur fuels damaged the cylinder walls on early engines. The M30 straight-six (730i, 735i) has cooling system failures -water pumps, radiators, and expansion tanks are all weak points. The M70 V12 (750i) is complex -two of everything means more electrical and injection system failures.

Is the BMW 7 Series E32 reliable?

It depends heavily on the engine and how it's been maintained. The M30 straight-six is famously robust -many examples exceed 200,000 miles. The M60 V8 is powerful but the Nikasil issue makes early cars a gamble. The M70 V12 is a masterpiece but complex -it's not unreliable, just expensive to maintain properly. Cooling system maintenance is critical for all engines.

Which E32 engine should I avoid?

Early M60 V8s (730i V8, 740i, pre-1995) without documented Nikasil history -bore wear is a known weakness. A 750i without documented electrical and injection system history is also a financial risk. Avoid any E32 with obvious overheating damage or poor service history. The M30 cars are the safest bet.

How do I know if my E32 engine needs replacing?

For M60 V8s: rough running, oil consumption, or loss of compression (Nikasil bore wear). For M30s: overheating (cooling system failure) or persistent coolant loss. For M70 V12s: rough running on one bank (electrical/injection failure). Use our diagnostic calculator for a personalised assessment.

Is it worth replacing an E32 engine, or should I scrap the car?

Depends on the car's value. Against a £6,000 735i, a £2,800–£5,000 M30 recon is 47–83% -at the upper end, that brushes our 70% BMW scrap threshold. Against a £4,000 730i, a £2,500–£4,500 recon is 63–113% -borderline. For a 750i at £8,000+, a £5,000–£9,000 V12 recon is 63–113% -a serious decision, but these are appreciating classics. Value the car and its condition first; if it's a V8 without Nikasil history, walk away.

How long do E32 engines last?

The M30 straight-six can exceed 200,000 miles with proper servicing -the cooling system is the limiting factor. The M60 V8 is capable of high mileage but Nikasil bore wear can cut its life short -later Alusil cars are safer. The M70 V12 is capable of high mileage but requires diligent maintenance -electrical and injection system work is essential.

What is the difference between the E23, E32, and E38 generations?

The E32 (1986–1994) is the second-generation 7 Series, succeeding the E23 (1977–1986) and preceding the E38 (1994–2001). The E32 introduced the V12 engine, L-shaped tail-lights, and projector headlamps. The E23 is more classic and analogue; the E38 is more refined and modern. The E32 sits in the middle -more capable than the E23, more characterful than the E38.

How do I find my E32 engine code?

Listed on the VIN plate and vehicle documentation; the engine code is also stamped on the cylinder block. For petrol six-cylinders: M30B30 (730i/730iL), M30B34 (735i/735iL). For petrol V8s: M60B30 (730i V8/730iL V8), M60B40 (740i/740iL). For petrol V12s: M70B50 (750i/750iL). Tell us your variant and registration year and we'll identify it -20+ vetted BMW specialists will confirm it for free.

E32 Engine Replacement Cost UK -Compare Quotes

Name: BMW 7 Series E32 UK Engine Enquiry Data 2025
Creator: BMWEngines.uk

BMW 7 Series E32 Engine Codes -The Complete Database

Every engine fitted to the E32 specifically -including the full range of M30 straight-six engines, the M60 V8 introduced in 1992, and the M70 V12 that powered the flagship 750i.

Engine CodeFamilyFuelDisplacementPowerYears (E32)Variants (badges)Reliability2025 EnquiriesAvg. Recon Cost

M30B30 (306KA)BMW M30Petrol3.0L (2986cc)188 bhp (138 kW)1986–1994730i, 730iL★★★★☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£2,500–£4,500 [BMW-QUOTE]

M30B34 (346KB)BMW M30Petrol3.4L (3430cc)211 bhp (155 kW)1986–1992735i, 735iL★★★★☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£2,800–£5,000 [BMW-QUOTE]

M60B30 (308S1)BMW M60Petrol3.0L (2997cc)215 bhp (160 kW)1992–1994730i V8, 730iL V8★★★☆☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£2,500–£4,500 [BMW-QUOTE]

M60B40 (408S1)BMW M60Petrol4.0L (3982cc)286 bhp (210 kW)1992–1994740i, 740iL★★★☆☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£3,500–£6,000 [BMW-QUOTE]

M70B50 (5012A)BMW M70Petrol5.0L (4988cc)296–300 bhp (220 kW)1987–1994750i, 750iL★★★☆☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£5,000–£9,000 [BMW-QUOTE]

Engine CodeFuelPowerYearsReliabilityEnquiriesAvg. Recon Cost

M30B30 (306KA)BMW M30Petrol188 bhp (138 kW)1986–1994★★★★☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£2,500–£4,500 [BMW-QUOTE]

M30B34 (346KB)BMW M30Petrol211 bhp (155 kW)1986–1992★★★★☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£2,800–£5,000 [BMW-QUOTE]

M60B30 (308S1)BMW M60Petrol215 bhp (160 kW)1992–1994★★★☆☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£2,500–£4,500 [BMW-QUOTE]

M60B40 (408S1)BMW M60Petrol286 bhp (210 kW)1992–1994★★★☆☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£3,500–£6,000 [BMW-QUOTE]

M70B50 (5012A)BMW M70Petrol296–300 bhp (220 kW)1987–1994★★★☆☆ [PROVISIONAL -pending dedicated Engine Page]-(pattern data)£5,000–£9,000 [BMW-QUOTE]

Overview

BMW 7 Series E32 -Overview

The E32 is the second generation of the BMW 7 Series, produced from June 1986 to April 1994.

Designed by Ercole Spada and Hans Kerschbaum under design director Claus Luthe, it succeeded the E23 and introduced a new level of technological sophistication to the luxury saloon segment. The E32 was the first BMW to feature L-shaped tail-lights, projector lens headlamps (1986), double-glazed windows (1991), and xenon headlamps (1991). The engine line‑up was equally groundbreaking: the M30 straight-six was joined by BMW's first post-war V12 -the M70 -in 1987, and by BMW's first V8 since 1962 -the M60 -in 1992. The E32 was replaced by the E38 in 1994.

Key Facts

Platform

BMW E32 (front-engine, rear-wheel drive)

Predecessor

BMW 7 Series (E23)

Successor

BMW 7 Series (E38)

Sibling body styles in this generation

4-door saloon (standard and long-wheelbase)

Market Intelligence

The 7 Series nameplate generated significant UK engine enquiries in 2025 [BMW-VERIFIED], with demand for the E32 concentrated on the V8-powered 740i and V12 750i based on market patterns.

BMW 7 Series E32 -Overview

The E32 is the second generation of the BMW 7 Series, produced from June 1986 to April 1994.

Designed by Ercole Spada and Hans Kerschbaum under design director Claus Luthe, it succeeded the E23 and introduced a new level of technological sophistication to the luxury saloon segment. The E32 was the first BMW to feature L-shaped tail-lights, projector lens headlamps (1986), double-glazed windows (1991), and xenon headlamps (1991). The engine line‑up was equally groundbreaking: the M30 straight-six was joined by BMW's first post-war V12 -the M70 -in 1987, and by BMW's first V8 since 1962 -the M60 -in 1992. The E32 was replaced by the E38 in 1994.

Key Facts

Platform

BMW E32 (front-engine, rear-wheel drive)

Predecessor

BMW 7 Series (E23)

Successor

BMW 7 Series (E38)

Sibling body styles in this generation

4-door saloon (standard and long-wheelbase)

Market Intelligence

The 7 Series nameplate generated significant UK engine enquiries in 2025 [BMW-VERIFIED], with demand for the E32 concentrated on the V8-powered 740i and V12 750i based on market patterns.

Best & Worst Engines

Best Value

M30B30 (730i)

“The 3.0-litre M30 delivers 188 bhp -enough for effortless cruising with straight-six smoothness and better economy than the 735i. It's the sensible choice that still feels special, and it's often cheaper to buy than the V8 or V12 cars.”

Who it's for: buyers who want E32 presence without V8 or V12 running costs.

Highest Risk

M60B40 (740i)

“The 4.0-litre V8 is a gem -286 bhp, smooth and responsive -but the Nikasil bore lining issue is a known weakness. High-sulphur fuels could damage the cylinder walls, leading to rough running and compression loss. Later cars with Alusil linings are safer, but early cars are a gamble without documentation.”

Who it's for: buyers who want V8 performance and are prepared to check for Nikasil issues.

Most Expensive Failure

M70B50 (750i V12)

“The V12 is a masterpiece -296 bhp and silky smooth -but it's complex and costly to maintain. Two of everything: two ECUs, two distributors, two throttle bodies. Parts are expensive and specialists are rare. A full engine rebuild can exceed £9,000.”

Who it's for: collectors and enthusiasts who understand the cost of ownership.

Most Overlooked

M70B50 (750i V12)

“The V12 is often dismissed as too complex and expensive, but it's genuinely special -Germany's first post-war V12, silky smooth, and effortlessly torquey. Well-maintained examples are a joy to own, and values are starting to climb. It's the ultimate E32.”

Who it's for: buyers who want the ultimate E32 -the flagship V12 experience.

Best Value

M30B30 (730i)

“The 3.0-litre M30 delivers 188 bhp -enough for effortless cruising with straight-six smoothness and better economy than the 735i. It's the sensible choice that still feels special, and it's often cheaper to buy than the V8 or V12 cars.”

Who it's for: buyers who want E32 presence without V8 or V12 running costs.

Highest Risk

M60B40 (740i)

“The 4.0-litre V8 is a gem -286 bhp, smooth and responsive -but the Nikasil bore lining issue is a known weakness. High-sulphur fuels could damage the cylinder walls, leading to rough running and compression loss. Later cars with Alusil linings are safer, but early cars are a gamble without documentation.”

Who it's for: buyers who want V8 performance and are prepared to check for Nikasil issues.

Most Expensive Failure

M70B50 (750i V12)

“The V12 is a masterpiece -296 bhp and silky smooth -but it's complex and costly to maintain. Two of everything: two ECUs, two distributors, two throttle bodies. Parts are expensive and specialists are rare. A full engine rebuild can exceed £9,000.”

Who it's for: collectors and enthusiasts who understand the cost of ownership.

Most Overlooked

M70B50 (750i V12)

“The V12 is often dismissed as too complex and expensive, but it's genuinely special -Germany's first post-war V12, silky smooth, and effortlessly torquey. Well-maintained examples are a joy to own, and values are starting to climb. It's the ultimate E32.”

Who it's for: buyers who want the ultimate E32 -the flagship V12 experience.

BMW 7 Series E32 -Ownership Economics

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

M30B30 (730i)100k–150kCooling system, head gasket leaks£500–£1,500£2,500–£4,500

Solid Six -reliable and affordable

M30B34 (735i)100k–150kCooling system, head gasket leaks£500–£1,500£2,800–£5,000

Best E32 Engine -the one to buy

M60B30 (730i V8)80k–120kNikasil bore wear (early), gaskets£1,000–£2,500£2,500–£4,500

Entry V8 -check Nikasil history

M60B40 (740i)80k–120kNikasil bore wear (early), valley pan£1,000–£3,000£3,500–£6,000

High Power, High Risk -Nikasil is the key

M70B50 (750i V12)60k–100kElectrical gremlins, cooling, injectors£1,500–£4,000£5,000–£9,000

Ultimate E32 -complex but rewarding

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

M30B30 (730i)100k–150kCooling system, head gasket leaks£500–£1,500£2,500–£4,500

Solid Six -reliable and affordable

M30B34 (735i)100k–150kCooling system, head gasket leaks£500–£1,500£2,800–£5,000

Best E32 Engine -the one to buy

M60B30 (730i V8)80k–120kNikasil bore wear (early), gaskets£1,000–£2,500£2,500–£4,500

Entry V8 -check Nikasil history

M60B40 (740i)80k–120kNikasil bore wear (early), valley pan£1,000–£3,000£3,500–£6,000

High Power, High Risk -Nikasil is the key

M70B50 (750i V12)60k–100kElectrical gremlins, cooling, injectors£1,500–£4,000£5,000–£9,000

Ultimate E32 -complex but rewarding

The E32 rule

A £2,800–£5,000 M30 recon against a £3,000–£10,000 E32 sits at 28–167% of the car's value -on a sub‑£4,000 example, that brushes our 70% BMW scrap threshold. Against a well‑kept £6,000+ example, the same recon drops to 47–83% -borderline but often viable for a cherished car. For a 750i at £8,000+, a £5,000–£9,000 V12 recon is 63–113% -a serious decision, but these are appreciating classics. Value the car first; if it's a V8 without Nikasil history, walk away or budget for the worst.

Key Takeaways

Which E32 Costs Least To Own?
M30B30 (730i) -straight-six simplicity, cheap parts, good economy for a large saloon.
Which E32 Costs Most To Own?
M70B50 (750i V12) -two of everything, complex electronics, expensive parts, rare specialists.
Which E32 Is Best Value?
M30B34 (735i) -211 bhp, silky smooth, proven reliability, and often cheaper than a V8.

Common Problems

01

M60

Nikasil Bore Lining Failure (V8 Engines)

Affected models:

Typical failure mileage:

Root cause:

Tiered Cost Table

Our Recommendation

If you're buying an M60-powered E32, have a compression test and leak-down test performed immediately. If the engine shows signs of bore wear (rough idle, oil consumption, loss of power), walk away unless the price reflects a future engine rebuild. Later cars with Alusil linings (1995+ block) are safer, but these are rare in the E32.

02

M30

Cooling System & Head Gasket (Six-Cylinders)

Affected models:

Typical failure mileage:

Root cause:

Tiered Cost Table

Our Recommendation

If you're buying any M30-powered E32, budget for a full cooling system refresh immediately -£500–£1,000 is cheap insurance against a £2,500+ replacement. Replace the water pump, radiator, thermostat, and hoses. On a 735i, this is non‑negotiable.

03

M70

V12 Electrical & Injection System (750i)

Affected models:

Typical failure mileage:

Root cause:

Tiered Cost Table

Our Recommendation

If you're buying an E32 750i, budget for a thorough electrical and injection system inspection -£1,000–£2,000 for preventative work is cheaper than the £5,000+ replacement that follows a catastrophic failure. On a V12, a good specialist is essential.

04

General

Electrical & Air Conditioning Issues (All Models)

Affected models:

Typical failure mileage:

Root cause:

Tiered Cost Table

Our Recommendation

Before buying any E32, check the air conditioning, heater fan, and on-board computer carefully. If the heater fan doesn't work on all speeds, budget for a dash-out repair. Check the suspension for sagging -self-levelling system repairs are expensive.

E32 Engine Replacement Costs -By Engine and Condition

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

730i / 730iLM30B30£1,500–£2,800£2,500–£4,500£3,500–£5,50010–14 hrs

735i / 735iLM30B34£1,800–£3,200£2,800–£5,000£4,000–£6,50010–14 hrs

730i V8 / 730iL V8M60B30£1,500–£2,800£2,500–£4,500£3,500–£5,50012–16 hrs

740i / 740iLM60B40£2,000–£3,500£3,500–£6,000£5,000–£8,00012–16 hrs

750i / 750iLM70B50£3,000–£5,500£5,000–£9,000£7,000–£11,00016–20 hrs

Core Variants

Diesel & Petrol Lineup

Petrol Variants

Petrol Six‑Cylinder Variants: 730i · 730iL · 735i · 735iLPetrol V8 Variants: 730i V8 · 730iL V8 · 740i · 740iLPetrol V12 Variants: 750i · 750iL

Scope note: All variants listed are E32 only. The 'L' suffix denotes long-wheelbase. The 730i was offered with both the M30 straight-six and the M60 V8 during overlapping periods (1992–1994). The 735i was only offered with the M30 straight-six.

Diesel & Petrol Lineup

Petrol Variants

Petrol Six‑Cylinder Variants: 730i · 730iL · 735i · 735iLPetrol V8 Variants: 730i V8 · 730iL V8 · 740i · 740iLPetrol V12 Variants: 750i · 750iL

Scope note: All variants listed are E32 only. The 'L' suffix denotes long-wheelbase. The 730i was offered with both the M30 straight-six and the M60 V8 during overlapping periods (1992–1994). The 735i was only offered with the M30 straight-six.

Market Intelligence

Most Requested E90 Engines (2025)

1.1. M30B34 (735i) -pattern data
2.2. M60B40 (740i) -pattern data
3.3. M70B50 (750i V12) -pattern data

Most Requested E90 Variants

1.1. 735i
2.2. 740i
3.3. 750i

Average E90 Replacement Cost

£3,500–£6,000 (reconditioned, supply only) [BMW-QUOTE]

Most Common E90 Failures

1.1. M60 Nikasil bore lining failure (V8s)
2.2. M30 cooling system & head gasket
3.3. M70 V12 electrical & injection system issues

Live Feed

VehicleLocationIssueEnquiries

BMW 735i

E32 (M30B34)

London

Cooling system failure, overheating

2

enquiries

BMW 740i

E32 (M60B40)

Manchester

Compression test, suspected bore wear

2

enquiries

BMW 750i

E32 (M70B50)

Birmingham

Running on one bank, electrical diagnosis

1

enquiry

Updated Monthly

FAQ

BMW 3 Series E90 rear three-quarter view

Why UK BMW 7 Series E32 Owners Trust BMWEngines.uk

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Why UK BMW 7 Series E32 Owners Trust BMWEngines.uk

Trusted E32 Engine Suppliers
every garage and engine rebuilder in our network is vetted, rated and reviewed by real E32 owners, as part of the Engine Finders network.
Compare E32 Engine Replacement Companies
see prices, warranty terms and supply & fit options side‑by‑side before you commit.
UK Engine Replacement Services for E32
covering every variant from 730i to 750i, with supply‑only or full supply & fit available nationwide.

Find the best BMW 7 Series E32 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 7 Series E32 Engine Prices on EnginesMarket

BMW 7 Series E32 Engines -The Complete UK Guide

BMW 7 Series E32 Engine Codes -The Complete Database

BMW 7 Series E32 -Overview

BMW 7 Series E32 -Overview

Best &amp; Worst Engines

BMW 7 Series E32 -Ownership Economics

Common Problems

E32 Engine Replacement Costs -By Engine and Condition

Diesel &amp; Petrol Lineup

Diesel &amp; Petrol Lineup

Market Intelligence

FAQ

Why UK BMW 7 Series E32 Owners Trust BMWEngines.uk

Why UK BMW 7 Series E32 Owners Trust BMWEngines.uk

Best & Worst Engines

Diesel & Petrol Lineup

Diesel & Petrol Lineup