BMW X5 45e Engine ReplacementCompare Prices & Get Quotes
Get quotes today from trusted UK BMW X5 45e engine specialists. Compare prices on reconditioned, rebuilt and used plug-in hybrid engines - supply & fit available nationwide.
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From In Hybrid - from £5,000 to £9,000
Used from £3,000 · Reconditioned from £5,500 · Common codes: B58B30C, B58B30M1
From £3,000
Tested, bare/short engine
From £5,500
Rod bearings addressed, tested
From quote
Upgraded bearings, full teardown, revised valvetrain
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3 Simple Steps3 Simple Stepsto Finding the Best BMW X5 45e Replacement Engineto Finding the Best BMW X5 45e Replacement Engine
Most replacements completed within 3-5 days.
Variant HistoryBMW X5 45e - Engine History & Specs at a Glance
Launched in 2019 as part of the fourth-generation G05 X5 range, the xDrive45e replaced the earlier F15 xDrive40e with a significantly more powerful and refined plug-in hybrid powertrain. Combining BMW's acclaimed B58 3.0-litre turbocharged straight-six petrol engine with an electric motor integrated into the eight-speed automatic gearbox, the 45e delivered 394hp and an electric-only range of up to 54 miles - a substantial leap over its predecessor.
Variant HistoryBMW X5 45e - Engine History & Specs at a Glance
Launched in 2019 as part of the fourth-generation G05 X5 range, the xDrive45e replaced the earlier F15 xDrive40e with a significantly more powerful and refined plug-in hybrid powertrain. Combining BMW's acclaimed B58 3.0-litre turbocharged straight-six petrol engine with an electric motor integrated into the eight-speed automatic gearbox, the 45e delivered 394hp and an electric-only range of up to 54 miles - a substantial leap over its predecessor.
BMW X5 45e
Fuel TypePetrol / Plug-in Hybrid (PHEV)
Engine Size3.0L (2,998cc)
Power Output394hp combined (286hp petrol + 113hp electric)Engine History Timeline
G05 X5 xDrive45e launched B58B30C 3.0-litre turbo petrol (286hp) + 83kW electric motor (113hp), 394hp combined, 21.6kWh battery
B58B30M1 engine code introduced for some markets; system power unchanged
Minor software updates for improved electric range and charging behaviour
Production continues with no major mechanical changes
xDrive50e replaces 45e with 489hp and larger battery; 45e production ends
present - 45e enters the used market; replacement demand grows as early examples pass 60,000-80,000 miles
Key Specs Snapshot
Fuel TypePetrol / Plug-in Hybrid (PHEV)Engine Size3.0L (2,998cc)Power Output394hp combined (286hp petrol + 113hp electric)Battery Capacity21.6 kWh (usable)Electric RangeUp to 54 miles (WLTP)Years Produced2019-2023Every engine fitted to the BMW X5 45e is covered below, with UK rebuilt pricing and known failure points specific to the B58 plug-in hybrid powertrain.
BMW X5 45e Engine Codes - Specifications & Replacement CostBMW X5 45e Engine Codes - Specifications & Replacement Cost
3.0L Plug-In Hybrid Petrol (2019-2023)
Power Output286hp (petrol engine) + 113hp (electric motor) = 394hp combinedTorque450Nm (petrol) + 265Nm (electric) = 600Nm combinedYears Fitted2019-2023 (G05)Engine Features3.0-litre turbocharged inline-six, DOHC 24-valve, direct injection, 48V starter-generator integration, electric motor in gearbox housingBattery21.6 kWh lithium-ion high-voltage battery
Compatible Trim Levels
- xDrive45e
- xDrive45e M Sport
- xDrive45e xLine
Find your exact engine code, specs and UK replacement cost guide.
Used
Tested, ready-to-fit engine
£3,000-£5,500 `[ESTIMATED - using B58B30 pricing as proxy]`
Reconditioned
Addressed known issues, tested
£5,500-£8,500 `[ESTIMATED - using B58B30 pricing as proxy]`
Rebuilt
Full teardown, upgraded internals
£7,000-£10,500 `[ESTIMATED - using B58B30 pricing as proxy]`
Common Failure
High-voltage battery degradation is the most significant long-term concern - capacity loss after 5-7 years or 100,000 km is reported. B58-standard issues include oil filter housing gasket leaks, water pump failure, and coolant system leaks. Hybrid system integration faults and electric coolant pump failures are also documented.
The BMW X5 45e combines the renowned B58 3.0-litre turbocharged petrol engine with an electric motor and 21.6 kWh battery. While the B58 is widely regarded as BMW's most reliable modern petrol engine, the hybrid system introduces additional complexity and potential failure points. Every rebuilt engine supplied through EnginesMarket includes upgraded components addressing the original failure points - plus a minimum 12-month unlimited mileage warranty.
Why the BMW X5 45e Loses Electric Range
Affected Vehicles
BMW X5 45e (G05, 2019-2023, B58B30C / B58B30M1)
Typical Failure Mileage
60,000-100,000 km (37,000-62,000 miles) or 5-7 years
Root Cause
The 21.6 kWh lithium-ion high-voltage battery degrades over time due to charge cycles, heat exposure, and age. Capacity loss manifests as reduced electric-only range, longer charging times, and decreased electric motor assistance.
Why It Happens
The 21.6 kWh lithium-ion high-voltage battery degrades over time due to charge cycles, heat exposure, and age. Capacity loss manifests as reduced electric-only range, longer charging times, and decreased electric motor assistance.
Dealer (parts + labour)
£5,000-£8,000
Specialist (parts + labour)
£3,500-£6,000
What it involves
Replace individual degraded battery modules; requires specialist hybrid workshop
Suitability
Viable if only one or two modules have failed
1 - 2 daysDealer (parts + labour)
£10,000-£15,000
Specialist (parts + labour)
£5,000-£8,500
What it involves
Complete battery pack replacement; includes BMS recalibration
Suitability
Required for extensive degradation; independent specialists offer significant savings
1 - 2 daysAll prices are indicative UK market ranges based on current UK specialist supplier data.| Repair Tier | Dealer (Parts + Labour) | Specialist (Parts + Labour) | What It Involves | Suitability | Estimated Time |
|---|---|---|---|---|---|
 Battery Module Replacement Minor | £5,000-£8,000 | £3,500-£6,000 | Replace individual degraded battery modules; requires specialist hybrid workshop | Viable if only one or two modules have failed | 1 - 2 days |
 Full High-Voltage Battery Replacement Best Value | £10,000-£15,000 | £5,000-£8,500 | Complete battery pack replacement; includes BMS recalibration | Required for extensive degradation; independent specialists offer significant savings | 1 - 2 days |
Vehicle Value Check
Vehicle Value Check
A typical BMW X5 45e is worth £35,000-£52,000 depending on age, mileage, and specification. Given the high vehicle value, battery replacement is generally viable even at the upper end of the cost range. However, on higher-mileage examples approaching 80,000 miles, evaluate the vehicle's overall condition before committing to a full battery replacement.
Our Recommendation
Our Recommendation
For a 45e you plan to keep long-term, a specialist battery module replacement or reconditioned battery pack offers the best value - often half the dealer price. If the battery is still under the 8-year/100,000-mile BMW high-voltage warranty (check your specific vehicle), replacement may be covered. For examples with extensive battery degradation and other issues, a full specialist replacement at £5,000-£8,500 is significantly more cost-effective than dealer pricing.
Don't Let Engine or Battery Failure Write Off Your BMW X5 45e
A failed engine or degraded hybrid battery doesn't have to mean the end of the road for your X5 45e. Whether you're facing B58 oil leaks, water pump failure, or high-voltage battery degradation, EnginesMarket connects you with trusted UK BMW hybrid specialists who supply rebuilt engines and reconditioned battery packs with upgraded components specifically designed to address the original failure points. Every engine comes with a minimum 12-month unlimited mileage warranty, nationwide delivery, and supply & fit options across the UK. Compare prices today - and keep your plug-in hybrid on the road without paying the main dealer premium.
Compare BMW X5 45e hybrid battery replacement costs
12-Month Minimum
UK Specialists Vetted
Best Price GuidanceImportant Information
Important Information
"All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EnginesMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific BMW X5 45e. Every engine supplied through EnginesMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier. High-voltage battery replacement costs are estimated based on industry data - confirm exact pricing with your chosen specialist."
BMW X5 45e Engine ReplacementFrequently Asked Questions
Question 1How much does a BMW X5 45e engine replacement cost in the UK-
A BMW X5 45e engine replacement typically costs £5,000-£9,000 supply-only for rebuilt units, or £6,500-£10,500 fitted by a specialist. The B58 hybrid system adds complexity compared to non-hybrid X5s.
- Used B58B30C engines: £3,000-£5,500 supply-only
- Reconditioned units: £5,500-£8,500 supply-only
- Professional fitting adds £1,000-£1,800 depending on workshop location
- Hybrid system recalibration is required after engine replacement
Question 2How reliable is the BMW X5 45e B58 hybrid engine-
The B58 petrol engine is widely regarded as BMW's most reliable modern engine. However, the 45e's hybrid system adds complexity. The primary long-term concern is high-voltage battery degradation after 5-7 years or 100,000 km. B58-standard issues include oil filter housing gasket leaks and water pump failure.
- B58 engine itself is exceptionally reliable - closed-deck design, robust internals
- High-voltage battery is the main long-term cost concern
- Hybrid cooling system requires specialist maintenance
- Regular servicing (including hybrid system checks) extends component life
Question 3How long does the BMW X5 45e high-voltage battery last-
The 21.6 kWh lithium-ion battery typically lasts 8-10 years or 100,000-150,000 miles. However, degradation begins after 5-7 years or 60,000-100,000 km, with reduced electric-only range being the first symptom.
- BMW offers an 8-year/100,000-mile warranty on the high-voltage battery (check your vehicle)
- Capacity loss of 20-30% is typical after 8 years
- Reconditioned battery packs offer a cost-effective alternative to dealer replacement
- Regular use and proper charging habits extend battery life
Question 4What are the signs of water pump failure in a BMW X5 45e-
The most common signs are coolant loss without visible external leaks, rising engine temperature, warning lights on the dashboard, and in severe cases, the vehicle shutting down completely. The 45e's cooling system also manages hybrid component temperatures.
- Low coolant warning is the earliest sign
- Engine temperature gauge rising above normal
- Whining noise from the front of the engine
- Hybrid system warning lights may also appear
Question 5Is it worth replacing the engine or battery on a high-mileage BMW X5 45e-
For a 45e worth £35,000-£52,000, a rebuilt B58 engine at £5,000-£9,000 or a reconditioned battery at £5,000-£8,500 can make financial sense if the rest of the vehicle is in excellent condition.
- Compare replacement cost against vehicle value - specialist advice: replacement viable up to 70% of car's value
- High-voltage battery replacement is often worthwhile given the vehicle's retained value
- Factor 12-month warranty into replacement decision
- Always get a full vehicle inspection before committing to major work
Question 6What's the difference between the BMW X5 45e and the newer 50e-
The 50e replaced the 45e in 2023 with significantly more power (489hp vs 394hp) and a larger battery. Both use the B58 petrol engine as the combustion basis, but the 50e has a more powerful electric motor and improved hybrid system.
- 45e: 394hp combined, 21.6 kWh battery, 54-mile electric range
- 50e: 489hp combined, 25.7 kWh battery, 67-mile electric range
- Both share the same B58 engine architecture
- 50e parts and replacement costs are currently higher due to newer technology
Why Choose UsCompare BMW X5 45eEngine PricesToday
11,000+ BMW X5 engines supplied through our network, including hybrid variants
12-Month Warranty on every rebuilt X5 45e engine
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supply & fit available, including hybrid system recalibration
Comparing quotes for your BMW X5 45e is free, no-obligation, and specific to your exact G05 plug-in hybrid and its B58 engine code - B58B30C or B58B30M1. Whether you need a used replacement, a reconditioned unit, or a full rebuilt engine with upgraded components - or if you're facing high-voltage battery degradation - our network of trusted UK BMW hybrid specialists delivers transparent pricing and nationwide coverage. Don't let a failed engine or degraded battery end the life of your plug-in hybrid X5 - compare prices today and get back on the road with confidence.
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