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NOx Sensors (X5 35d / Diesel) cost

NOx Sensors (X5 35d / Diesel) on a BMW with the M57/N57 engine typically costs $500–$2,678 at a BMW dealer or about $330 in parts DIY, based on 3 real owner-reported prices.

Last updated October 16, 2026 · Sources: 3 owner-reported prices from 3 cited threads

Upstream and downstream NOx sensors on BMW BlueTec diesels. Real prices reported by owners on Reddit and BMW forums, with a link to every one.

M57N57E70 F15 E90 F10

Limited data: One dealer quote and one warranty invoice; DIY sensor prices from owners.

Typical cost

BMW dealer

$500 – $2,678

Median $1,589 · 2 data points

Independent shop

No real price found yet

DIY (parts/tools)

$330

Median $330 · 1 data point

Ranges are the lowest and highest prices in the table below. They are not estimates. Shop prices include parts and labor unless noted.

Every price we found

Price	Where	Details	Source
$2,678	Dealer	Dealer quote, both NOx sensors, 2012 X5 35d	[1]
$500	Dealer	Per sensor, from a warranty invoice (about $500 each)	[2]
$330	DIY	Paid for one downstream sensor, 2010 X5	[2]
$1,100–$1,200	Indy	Estimate JustAnswer mechanic estimate, both sensors installed	[3]

The two positions use different part numbers; one owner was sold the wrong one.
A bad SCR mixer or DEF valve can make good sensors read wrong; diagnose before buying two.

How long it takes

Roughly 1 hour each per a JustAnswer mechanic estimate; the upstream sensor is easier to reach.

Which cars are affected

2009–2013 X5 xDrive35d (E70) and 335d; similar sensors on F15 X5 35d and 328d/535d. Needs an SCR/NOx adaptation reset after replacement.

Symptoms

Check engine light with NOx codes (e.g. 4D16)
"Incorrect exhaust fluid" / DEF warning
No-start countdown on the DEF system

Parts list

NOx sensor, upstream (check part number by position)	ECS Tuning Pelican Parts Amazon
DEF / AdBlue dosing module	ECS Tuning Pelican Parts Amazon

Check fitment for your exact car (VIN) before ordering. Links may become affiliate links in the future.

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Common questions

How much does NOx Sensors (X5 35d / Diesel) cost?

NOx Sensors (X5 35d / Diesel) on a BMW with the M57/N57 engine typically costs $500–$2,678 at a BMW dealer or about $330 in parts DIY, based on 3 real owner-reported prices.

How much does NOx Sensors (X5 35d / Diesel) cost at a BMW dealer?

Real dealer prices we found ranged $500 to $2,678 (2 data points, median $1,589).

How much does an independent shop charge for NOx Sensors (X5 35d / Diesel)?

We have not found a real independent shop price for this job yet.

Can I do NOx Sensors (X5 35d / Diesel) myself?

Owners who did it themselves reported $330 in parts and tools.

How long does NOx Sensors (X5 35d / Diesel) take?

Roughly 1 hour each per a JustAnswer mechanic estimate; the upstream sensor is easier to reach.

Which BMWs are affected?

2009–2013 X5 xDrive35d (E70) and 335d; similar sensors on F15 X5 35d and 328d/535d. Needs an SCR/NOx adaptation reset after replacement.