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BMW N55 engine repair costs

We have real owner-reported prices for 12 N55 repairs. Among those with at least two dealer or independent prices for this engine, the highest median is Oil Pan Gasket Replacement at $2,850 and the lowest is Charge Pipe Replacement at $750.

Specs and history from Wikipedia (revisions listed below) · every price links to its source on the repair page

N55 at a glance

Production	2009–2021	[1]
Configuration	Straight-6	[1]
Displacement	2979 cc (181.8 cu in)	[1]
Fuel type	Petrol	[1]
Forced induction	Single BorgWarner twin-scroll with Intercooler	[1]
Valvetrain	DOHC, with VVT & VVL	[1]
Timing drive	Chain	[1]
Block	Aluminium	[1]
Cylinder head	Aluminium	[1]
Bore × stroke	84 mm (3.31 in) × 89.6 mm (3.53 in)	[1]
Redline	7,000 RPM	[1]
Fuel system	Direct injection	[2]

Cars with the N55

335i, 435i, 535i, 135i, M235i and M2, plus the X5 35i, per our repair data. This line only lists cars our own repair data names for this engine.

Cars and chassis codes named in Wikipedia's article on this engine. It can include related or successor models, so treat it as a lead and check your exact car. Open a linked model to see its repair costs.

Show 16 more

7 Series 740i/Li (F01/F02)
2 Series M235i (F22/F23)
1 Series M135i LCI (F20/F21)
3 Series ActiveHybrid 3 (F30)
5 Series ActiveHybrid 5 (F10)
M2 (F87)
X4 M40i (F26)
M2 Competition (F87)
M3 (F80)
M4 (F82/F83)
M3 with Competition package (F80)
M4 with Competition package (F82/F83)
M2 CS (F87)
M3 CS (F80)
M4 CS (F82)
M4 GTS (F82)

Model pages for the N55

Chassis pages whose cars, per Wikipedia, used this engine.

E87 1 Series E82 1 Series E88 1 Series F20 1 Series F21 1 Series F22 2 Series F23 2 Series E90 3 Series E91 3 Series E92 3 Series E93 3 Series F30 3 Series F31 3 Series F34 3 Series F32 4 Series F33 4 Series F36 4 Series F10 5 Series F11 5 Series F07 5 Series F12 6 Series F13 6 Series F06 6 Series F01 7 Series F02 7 Series E84 X1 F25 X3 F26 X4 E70 X5 F15 X5 E71 X6 F16 X6

Repairs we have prices for

Sorted by number of reported prices. "N55 only" rows use only prices that name this engine. "Whole job" rows use every price on that repair page, which also covers other engines, so read them as a general guide.

Repair	Scope	Dealer	Independent	DIY	Prices
Carbon Cleaning / Walnut Blasting	Whole job	$600	$180–$1,300	$30–$75	11
Spark Plugs & Ignition Coils (N55)	N55 only	$650–$1,500	$250–$1,200	$150–$480	8
Charge Pipe Replacement	N55 only	$1,500	$500–$1,400	$250–$446	7
Oil Filter Housing Gasket Replacement	N55 only	$500	$1,400–$1,950	—	5
N55 Fuel Injectors	N55 only	$1,600–$4,500	$2,300	$744	4
Valve Cover Gasket Replacement	N55 only	$2,552	$1,000–$1,700	—	3
Coolant Expansion Tank Replacement	N55 only	—	$400	$100–$115	3
Serpentine Belt, Tensioner & Idler	Whole job	—	$100	$151–$197	3
N54 / N55 Turbo Replacement	Whole job	$2,800–$7,600	—	$2,300	3
Water Pump & Thermostat Replacement	N55 only	—	$940–$1,800	—	2
Oil Pan Gasket Replacement	N55 only	$2,700–$3,000	—	—	2
Rear Main Seal	N55 only	$2,400	$1,800	—	2

Most expensive N55 repairs in our data

Ranked by the median of dealer and independent prices for N55 cars, for repairs with at least two such prices. Scope differs between reports, so open the page before comparing.

Oil Pan Gasket Replacement: median $2,850, range $2,700–$3,000 (2 prices)
N55 Fuel Injectors: median $2,300, range $1,600–$4,500 (3 prices)
Rear Main Seal: median $2,100, range $1,800–$2,400 (2 prices)
Valve Cover Gasket Replacement: median $1,700, range $1,000–$2,552 (3 prices)
Oil Filter Housing Gasket Replacement: median $1,500, range $500–$1,950 (5 prices)

Cheapest N55 repairs in our data

Charge Pipe Replacement: median $750, range $500–$1,500 (5 prices)
Spark Plugs & Ignition Coils (N55): median $950, range $250–$1,500 (5 prices)
Water Pump & Thermostat Replacement: median $1,370, range $940–$1,800 (2 prices)
Oil Filter Housing Gasket Replacement: median $1,500, range $500–$1,950 (5 prices)
Valve Cover Gasket Replacement: median $1,700, range $1,000–$2,552 (3 prices)

Models these repairs appear on

E90 E92 F30 F32 F22 F10 E70 F15 E82 E60 F31 E93 F25 F82 F87

Before and after

Predecessor: BMW N54
Successor: BMW B58

Related engines

BMW N57 (2008–2019)
BMW S55 (2014–2021)
BMW N74 (2009–present)
BMW S63 (2009–present)
BMW N63 (2008–present)

Related guides

Common questions

What are the most common BMW N55 repairs?

The N55 repairs owners have reported prices for are: Oil Filter Housing Gasket Replacement, Valve Cover Gasket Replacement, Water Pump & Thermostat Replacement, Coolant Expansion Tank Replacement, Oil Pan Gasket Replacement, Rear Main Seal, Carbon Cleaning / Walnut Blasting, Charge Pipe Replacement, Spark Plugs & Ignition Coils (N55), Serpentine Belt, Tensioner & Idler, N55 Fuel Injectors, N54 / N55 Turbo Replacement. These are repairs we have real prices for, not a measured failure rate.

What is the most expensive N55 repair?

Among N55 repairs with at least two dealer or independent prices, Oil Pan Gasket Replacement has the highest median, at $2,850 ($2,700–$3,000, 2 prices).

What is the cheapest N55 repair?

Among N55 repairs with at least two dealer or independent prices, Charge Pipe Replacement has the lowest median, at $750 ($500–$1,500, 5 prices).

Which BMWs have the N55 engine?

335i, 435i, 535i, 135i, M235i and M2, plus the X5 35i, per our repair data.

When was the BMW N55 engine produced?

2009–2021, per Wikipedia.

Sources

Wikipedia: BMW N55 (revision 1373603713, read 2026-10-23)
Wikipedia: List of BMW engines