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BMW F30 3 Series Buying Guide: What It Costs to Fix
On an F30 3 Series, check the engine first (N20 timing chain and turbo, N55 oil leaks, B48 cooling), then the coolant expansion tank, the electric steering rack, the xDrive driveline and the front suspension, and ask which jobs are documented.
Last updated · By BimmerQuote (how we build guides) · Costs on this page come from the linked repair pages, each citing its sources.
What this guide covers
This guide covers the F30 sedan and F31 wagon, which our repair pages tie to the 320i and 328i (N20), 335i (N55), 330i (B46/B48) and 340i (B58). The chassis page is BMW F30 repair costs. The costs are owner reports, not failure rates. For the current-generation car see BMW G20 3 Series Common Problems.
The coolant expansion tank is the F30's repeat offender; a cracked vent hose causes the same sudden leak and a dealer asked a small amount for the hose (F30 Coolant Expansion Tank & Coolant Lines). The in-tank fuel pump can cause a drivetrain malfunction warning and stalling (Low Pressure Fuel Pump (In-Tank)).
Sudden loss of power steering assist, a steering warning light or notchy steering points at the electric steering rack; check BMW for open campaigns or goodwill because F30 EPS failures were common (Electric Steering Rack (F30)). A shimmy under braking or a clunk over bumps points at the front arms and thrust arm bushings (Front Control Arms & Thrust Arm Bushings). Struts wear as a floaty ride and cupped tires (Struts & Shocks Replacement).
Owners priced the N20 timing chain, the coolant expansion tank, the electric steering rack, xDrive parts and oil leaks on the N55. It depends heavily on the engine.
How much does the F30 coolant expansion tank cost?
F30 Coolant Expansion Tank & Coolant Lines on a BMW with the N20/N55/B46/B48 engine typically costs $400–$1,500 at an independent shop, $2,500 at a BMW dealer, or $50–$115 in parts DIY, based on 7 real owner-reported prices.
How much does an F30 steering rack replacement cost?
Electric Steering Rack (F30) on a BMW F30/F31/F32 typically costs $2,000 at an independent shop or $11,600 at a BMW dealer, based on 2 real owner-reported prices.
How much does an F30 clutch replacement cost?
E9x / F3x Clutch Replacement on a BMW with the N52/N54/N55/N20 engine typically costs $700–$3,830 at an independent shop, $2,300–$3,685 at a BMW dealer, or $392–$750 in parts DIY, based on 14 real owner-reported prices.
Where this comes from
Every cost on this page is pulled from these repair pages, which list the price, the forum or shop source and the details for each report. This guide adds no prices of its own.
