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BMW F34 3 Series (2011–2018) repair costs

We have real owner-reported prices for 3 BMW F34 3 Series repairs. Of those with at least two dealer or independent prices, N20 Timing Chain & Guides has the highest median ($3,800) and F30 Coolant Expansion Tank & Coolant Lines the lowest ($1,450).

Specs from Wikipedia (revisions listed below) · 24 reported prices, every one linked to its source on the repair page

The F34 is part of the F30 3 Series generation. The facts below are that generation's.

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F34 at a glance

Chassis code	F34	[1]
Production	October 2011 – October 2018	[1]
Model years	2012–2018	[1]
Class	Compact executive car (D)	[1]
Layout	Front-engine, rear-wheel-drive / Front-engine, all-wheel-drive (xDrive)	[1]
Platform	BMW L7	[1]
Wheelbase	2810 mm (110.6 in) (F30/31) / 2920 mm (115.0 in) (F34/35)	[1]
Length	4624–4643 mm (182.0–182.8 in) (F30/31) / 4734 mm (186.4 in) (F35) / 4824 mm (189.9 in) (F34)	[1]
Width	1811 mm (71.3 in) / 1828 mm (72.0 in) (F34)	[1]
Height	1429–1434 mm (56.3–56.5 in) (F30/31) / 1455 mm (57.3 in) (F35) / 1508 mm (59.4 in) (F34)	[1]
Curb weight	1385–1769 kg (3053–3900 lb) (F30, including hybrid models) / 1465–1767 kg (3230–3896 lb) (F31) / 1540–1650 kg (3395–3638 lb) (F35) / 1540–1780 kg (3395–3924 lb) (F34)	[1]

Predecessor: BMW 3 Series (E90)
Successor: BMW 3 Series (G20) / BMW 4 Series (G22) / BMW 4 Series (G26) Gran Coupé (F34)

Engines offered

Engine pages whose Wikipedia car list names the F34. It can include markets or variants, so confirm your engine code.

N55 2009–2021 N20 2011–2018 B46/B48 2014–present B58 2015–present N47 2007–2014 B47 2014–present

Repairs by typical shop cost

Highest to lowest median of dealer and independent prices. Rows marked "F34 prices" use only prices tied to this model; "whole job" rows use every price on that repair, which can include other models, so open the page before comparing.

Repair	Scope	Dealer	Independent	DIY	Prices
N20 Timing Chain & Guides	Whole job	$3,500–$7,000	$2,000–$9,700	$1,000–$1,700	14
F30 Coolant Expansion Tank & Coolant Lines · limited	Whole job	$2,500	$400–$1,500	$50–$115	7
B46/B48 Turbo Coolant Return Line · limited	Whole job	$801	—	$77–$107	3

Most commonly reported F34 repairs

N20 Timing Chain & Guides (14 reported prices)
F30 Coolant Expansion Tank & Coolant Lines (7 reported prices)
B46/B48 Turbo Coolant Return Line (3 reported prices)

Generations and body styles

Same generation: F30, F31, F35
Previous generation: E90 3 Series (2004–2013)
Next generation: G20 3 Series (2018–2026)

Related models

More 3 Series chassis codes: E21 · E30 · E36 · E46 · E90 · E91 · E92 · E93 · F30 · F31 · F35 · G20 · G21 · G28

Other BMWs that started in the 2010s: F20 1 Series · F21 1 Series · F52 1 Series · F40 1 Series · F22 2 Series · F23 2 Series · F45 2 Series · F46 2 Series · F32 4 Series · G30 5 Series · F12 6 Series · G32 6 Series · G11 7 Series · G12 7 Series · G15 8 Series · F48 X1 · F39 X2 · F25 X3 · G01 X3 · F26 X4 · G02 X4 · F15 X5 · F85 X5 · G05 X5 · F16 X6 · F86 X6 · G06 X6 · F96 X6 · G07 X7 · G29 Z4 · I12 i8 · I15 i8 · F87 M2 · F80 M3 · F82 M4 · F83 M4 · F10 M5 · F90 M5 · F06 M6 · F91 M8

Common questions

What are the most common BMW F34 3 Series repairs?

The repairs with the most reported prices for the F34 are N20 Timing Chain & Guides, F30 Coolant Expansion Tank & Coolant Lines, B46/B48 Turbo Coolant Return Line. This reflects how many prices owners have reported, not a measured failure rate.

What is the most expensive BMW F34 3 Series repair?

N20 Timing Chain & Guides has the highest median of dealer and independent prices in our data, at $3,800 ($2,000–$9,700, 12 prices).

What is the cheapest BMW F34 3 Series repair?

F30 Coolant Expansion Tank & Coolant Lines has the lowest median of dealer and independent prices in our data, at $1,450 ($400–$2,500, 4 prices).

When was the BMW F34 3 Series produced?

October 2011 – October 2018, per Wikipedia.

Which engines were offered in the BMW F34 3 Series?

Engines whose Wikipedia articles name F34: N55, N20, B46/B48, B58, N47, B47. Check your car's engine code before relying on this list.

Sources

Wikipedia: BMW 3 Series (F30) (revision 1380622025, read 2026-10-23)