BMW 1 Series E87Hatchback2004–2011
Every engine fitted to the E87 five-door hatchback — from the 1.6-litre four-cylinder petrols to the 3.0-litre straight-six and the N47 diesel that defined this generation.
Real UK replacement costs, honest failure data, and the timing chain and injector issues that shape the E87's ownership story.
Backed by 240+ real UK E87 enquiries in 2025 [BMW-VERIFIED].
Engine Database
Every engine fitted to the E87 five-door hatchback specifically — including the pre- and post-facelift engine changes that split this generation in two.
Overview
The E87 is the five-door hatchback variant of the first-generation BMW 1 Series, launched in September 2004 as BMW's entry-level model. It was the first compact hatchback from BMW to feature rear-wheel drive — a layout that would define the 1 Series until the F40 generation.
The engine lineup spanned 1.6 and 2.0-litre four-cylinder petrols, a 3.0-litre straight-six petrol in the 130i, and 2.0-litre four-cylinder diesels. A significant March 2007 facelift (LCI) brought revised styling, new engines (N43 petrols and N47 diesels), and improved fuel economy across the range.
Key Facts
Market Intelligence
The E87 generated 240 real UK engine enquiries in 2025 [BMW-VERIFIED], with the N47 diesel variants accounting for the largest share of demand.
04Best & Worst Engines
Best Diesel Overall
M47D20 (pre-LCI, 2004–2007)
“The M47 is the last of BMW's more robust diesel fours — no rear-mounted timing chain to worry about, and a documented reputation for durability when serviced properly. The 163 bhp 120d is the pick of the bunch.”
Who it's for: buyers who want E87 diesel torque without the N47's timing chain anxiety.
Best Petrol Overall
N52B30 (130i)
“The 3.0-litre straight-six is the E87's sweetheart — smooth, naturally aspirated, and free of the N43's injector and NOx sensor woes. It's the most reliable engine in the E87 lineup.”
Who it's for: enthusiasts who want the ultimate E87 driving experience.
Highest Risk
N47D20 (post-LCI diesel, 2007–2011)
“The rear-mounted timing chain is this generation's defining risk — cold-start rattle is the warning, and a snapped chain means full replacement. The 123d's twin-turbo adds even more complexity.”
Who it's for: only buyers with documented chain-replacement history and a healthy budget.
Most Expensive Failure
N47D20 Timing Chain
“A snapped timing chain on the N47 means piston-to-valve contact and a full engine replacement. The rear-mounted design makes access difficult and labour-intensive.”
Who it's for: buyers who can afford a £4,500+ replacement if the chain lets go.
Best Value
N46B20 (118i/120i, pre-LCI)
“The 2.0-litre N46 petrol offers a good balance of performance and running costs, with fewer horror stories than the N43 that replaced it. Valvetronic and VANOS are its only real wear items.”
Who it's for: buyers who want petrol refinement without the N43's injector issues.
Most Overlooked
N52B30 (130i)
“The 130i is often forgotten in the 1 Series conversation, but it's the E87's hidden gem — 265 bhp, a glorious straight-six soundtrack, and the most reliable engine in the range.”
Who it's for: enthusiasts who want a modern BMW straight-six before they all went turbo.
Best Diesel Overall
M47D20
(pre-LCI, 2004–2007)
“The M47 is the last of BMW's more robust diesel fours — no rear-mounted timing chain to worry about, and a documented reputation for durability when serviced properly. The 163 bhp 120d is the pick of the bunch.”
Who it's for: buyers who want E87 diesel torque without the N47's timing chain anxiety.
Best Petrol Overall
N52B30
(130i)
“The 3.0-litre straight-six is the E87's sweetheart — smooth, naturally aspirated, and free of the N43's injector and NOx sensor woes. It's the most reliable engine in the E87 lineup.”
Who it's for: enthusiasts who want the ultimate E87 driving experience.
Highest Risk
N47D20
(post-LCI diesel, 2007–2011)
“The rear-mounted timing chain is this generation's defining risk — cold-start rattle is the warning, and a snapped chain means full replacement. The 123d's twin-turbo adds even more complexity.”
Who it's for: only buyers with documented chain-replacement history and a healthy budget.
Most Expensive Failure
N47D20
Timing Chain
“A snapped timing chain on the N47 means piston-to-valve contact and a full engine replacement. The rear-mounted design makes access difficult and labour-intensive.”
Who it's for: buyers who can afford a £4,500+ replacement if the chain lets go.
Best Value
N46B20
(118i/120i, pre-LCI)
“The 2.0-litre N46 petrol offers a good balance of performance and running costs, with fewer horror stories than the N43 that replaced it. Valvetronic and VANOS are its only real wear items.”
Who it's for: buyers who want petrol refinement without the N43's injector issues.
Most Overlooked
N52B30 (130i)
“The 130i is often forgotten in the 1 Series conversation, but it's the E87's hidden gem — 265 bhp, a glorious straight-six soundtrack, and the most reliable engine in the range.”
Who it's for: enthusiasts who want a modern BMW straight-six before they all went turbo.
Engine
Typical Mileage
Common Major Failure
Repair Cost (Specialist)
Replacement Cost (Recon)
Ownership Verdict
Budget Choice -cheap to fix, but N43 has known injector problems.
Solid Choice -N46 is reliable; N43 has injector and NOx sensor issues.Best Petrol -the E87's most dependable engine.Best Diesel -the more robust diesel option.
High Risk -budget for chain work; 123d adds twin-turbo complexity.EngineTypical MileageCommon Major FailureRepair Cost (Specialist)Replacement Cost (Recon)Ownership VerdictBudget Choice -cheap to fix, but N43 has known injector problems.Solid Choice -N46 is reliable; N43 has injector and NOx sensor issues.Best Petrol -the E87's most dependable engine.Best Diesel -the more robust diesel option.High Risk -budget for chain work; 123d adds twin-turbo complexity.
The E87 rule
A £4,500 N47 recon against a £5,000 E87 sits at 90% -brushing our 70% BMW threshold. On a sub-£4,000 E87, that recon is simply not viable. Against a well-kept £7,000+ 130i, the same recon drops to a more palatable figure -but the N47 is never cheap to replace. Value the car first, then the repair.
Key Takeaways
Which E87 Costs Least To Own?
N46B20 (118i/120i) -cheap parts, no turbo, no timing chain nightmares.
Which E87 Costs Most To Own?
N47D20 (123d) -timing chain work and twin-turbo complexity add up fast.
Which E87 Is Best Value?
M47D20 (pre-LCI 120d) -diesel torque without the N47's timing chain risk.
N47
Diesel Timing Chain Stretch
Affected models:
E87 116d, 118d, 120d, 123d (2007–2011).
Typical failure mileage:
60,000–120,000 miles.
Root cause:
The N47 diesel's rear-mounted timing chain receives the last oil feed and is tensioned by a plastic guide that degrades over time. Cold-start rattle for 1–2 seconds is the classic early warning. The 123d's twin-turbo setup adds complexity and cost.
Tiered Cost Table
Preventative (Repair)
Dealer
Specialist
£1,800–£3,000
£800–£2,000
Replace chain, tensioner and guides
Yes -cheap insurance
Catastrophic (Replacement)
Dealer
Specialist
£5,500–£8,000
£3,500–£5,500
Full reconditioned N47 engine
Often 50–90% of E87 value
Our Recommendation
At the first sign of cold-start rattle on an N47 E87, get the chain inspected immediately -an £800–£2,000 preventative repair is dramatically cheaper than the £3,500–£5,500 replacement that follows if ignored. On an E87 worth under £4,000, this decision alone determines whether the car stays viable.
N43
Petrol Injector and NOx Sensor Failure
Affected models:
E87 116i, 118i, 120i (LCI, 2007–2011).
Typical failure mileage:
60,000–100,000 miles.
Root cause:
The N43 petrol engines suffer from endless coil, injector and NOx sensor issues. They run hot for emissions purposes, which cooks rubber gaskets and plastic timing chain guides. High-pressure fuel pump failure is also common.
Tiered Cost Table
Preventative (Repair)
Dealer
Specialist
£800–£1,500
£400–£1,000
Injector and NOx sensor replacement
Yes -but costs add up
Catastrophic (Replacement)
Dealer
Specialist
£3,000–£5,000
£2,000–£3,500
Full reconditioned N43 engine
Often 40–70% of E87 value
Our Recommendation
If your N43 E87 develops rough running or a check engine light, have the injectors and NOx sensors diagnosed immediately. A £400–£1,000 repair is manageable, but these engines can become money pits -be realistic about the car's value.
N46/N52
VANOS Solenoid and Oil Leak Issues
Affected models:
E87 118i, 120i (N46) and 130i (N52).
Typical failure mileage:
60,000–120,000 miles.
Root cause:
The N46 and N52 engines suffer from VANOS solenoid wear, leading to rough idle and loss of low-end power. Oil leaks from the valve cover gasket and oil filter housing are also common.
Tiered Cost Table
Preventative (Repair)
Dealer
Specialist
£500–£1,000
£300–£700
VANOS solenoid replacement; gasket replacement
Yes -routine maintenance
Catastrophic (Replacement)
Dealer
Specialist
£3,500–£5,500
£2,500–£4,500
Full reconditioned engine
Often 40–60% of E87 value
Our Recommendation
At the first sign of rough idle or a VANOS fault code, have the solenoids inspected and cleaned or replaced -a £300–£700 repair is far cheaper than the £2,500–£4,500 replacement that follows if ignored.
E87
Rear Subframe Mount Cracking
Affected models:
All E87 variants, particularly high-mileage examples.
Typical failure mileage:
80,000+ miles.
Root cause:
Not an engine failure, but the most common non-engine enquiry on this generation -the rear axle carrier panel can crack around the subframe mounting points under sustained load, a known issue shared with the E90 3 Series.
Tiered Cost Table
Preventative (Repair)
Dealer
Specialist
£400–£700
£200–£400
Reinforcement plate fitting before cracking starts
Yes -cheap if caught early
Catastrophic (Replacement)
Dealer
Specialist
£1,800–£2,800
£900–£1,600
Subframe panel repair or replacement
Borderline -value the car first
Our Recommendation
Have this checked on any E87 over 80,000 miles -it's the single most common reason an otherwise sound E87 fails an inspection.
VariantEngine Code
Used (Supply)
Reconditioned (Supply)
Rebuilt (Supply)
Labour HoursNo Generation variance from the Model Page's baseline figures -E87 shares identical engine-bay access with its E81/E82/E88 siblings, so costs are inherited directly per the Authority Model, with no divergence note required.
Scope note: All variants listed are E87 five-door hatchback only. E81 (3-door hatchback), E82 (coupé) and E88 (convertible) share most of these engines but are covered on their own Generation Pages, since fitment and labour access vary slightly by body style.
Most Requested Engines (2025)
Most Requested Variants
Average Replacement Cost
£1,500–£4,500
reconditioned, supply only
[BMW‑QUOTE]
Most Common Failures
Live FeedBMW 120d E87
N47
Manchester
Cold-start rattle4
enquiries
Updated MonthlyBMW 118i E87
N43
BirminghamRough running and CEL3
enquiries
Updated MonthlyBMW 130i E87
N52
LondonPre-purchase inspection2
enquiries
Updated MonthlyMost Requested Engines (2025)
Most Requested Variants
Average Replacement Cost
£1,500–£4,500
reconditioned, supply only
[BMW‑QUOTE]
Most Common Failures
Most Requested Engines (2025)
Most Requested Variants
Average Replacement Cost
£1,500–£4,500
reconditioned, supply only
[BMW‑QUOTE]
Most Common Failures
Scope note: All variants listed are E87 five-door hatchback only. E81 (3-door hatchback), E82 (coupé) and E88 (convertible) share most of these engines but are covered on their own Generation Pages, since fitment and labour access vary slightly by body style.
Most Requested Engines (2025)
Most Requested Variants
Average Replacement Cost
£1,500–£4,500
reconditioned, supply only
[BMW‑QUOTE]
Most Common Failures
Most Requested Engines (2025)
Most Requested Variants
Average Replacement Cost
£1,500–£4,500
reconditioned, supply only
[BMW‑QUOTE]
Most Common Failures
Most Requested Engines (2025)
Most Requested Variants
Average Replacement Cost
£1,500–£4,500
reconditioned, supply only
[BMW‑QUOTE]
Most Common Failures
Live FeedBMW 120d E87
N47
ManchesterCold-start rattle4
enquiries
BMW 118i E87
N43
BirminghamRough running and CEL3
enquiries
BMW 130i E87
N52
LondonPre-purchase inspection2
enquiries
Updated MonthlyTrusted E87 Engine Suppliers
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Compare BMW 1 Series E87 Engine Replacement Companies
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UK Engine Replacement Services for BMW 1 Series E87
covering every variant from 116i to 130i, with nationwide supply and specialist fitting available.
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