The Lemon Index$852 middle bill · most between $741 and $1,300
Lower than the $1,200 middle bill owners of all 139 models reported.
Owners who gave their mileage: a middle of 55,000 miles (7 reports).
BMW 3 Series owners reported paying a median of $852 for a wiring harness repair, with the middle half of bills between $741 and $1,300. That's from 8 owner reports (8 complaints to NHTSA). Costs vary by shop and region.
What owners paid
- Under $50012%
- $500–$1,00050%
- $1,000–$2,50025%
- $2,500–$5,00012%
- $5,000 and up0%
Share of the 8 owner reports in each price band.
By model year
- 2002 BMW 3 Series3$800 middle bill
- 2005 BMW 3 Series1too few for a middle
- 2008 BMW 3 Series2too few for a middle
- 2011 BMW 3 Series1too few for a middle
- 2014 BMW 3 Series1too few for a middle
Reports per model year, with the middle bill where there are 3 or more. YouTube amounts count for the generation the video covers.
Engines in these years
BMW M54 · BMW N20 · BMW N52 · BMW N54 · BMW N55 · S54 · S65 4.0 V8
Engines with a page of their own that this model was sold with in the years above. Owners don't always say which engine they had.
Keep going
- BMW 3 Series reliability by year
- Wiring harness repair cost on every car
- Car symptoms and what they can mean
Other repairs BMW 3 Series owners reported
Transmission replacement (38) · Steering column repair (16) · Fuel pump replacement (15) · Engine replacement (10) · Water pump replacement (9) · Timing chain replacement (8) · Brake repair (5)
The details
How we count
Every number here is a repair bill an owner reported, never a shop's price list. Two sources: the bills owners wrote in their own complaints to the U.S. government (NHTSA), and the dollar amounts owners said out loud in YouTube repair and ownership videos. A figure counts for a repair when that repair is the part named nearest to it. Left out: purchase prices, payments, rentals, towing, warranties and deductibles, amounts under $50 or over $15,000, parts-only prices ("the part was $80 on Amazon"), bills for two different repairs named together, and money someone else paid. One number per complaint (or video) and repair: the biggest, so it's the bill, not the diagnosis fee.
The range is the middle half of the bills (the 25th to the 75th percentile), so one wild number can't swing it. Owners who complain to the government often had expensive repairs, so a typical bill can be lower. Costs vary by shop and region, by dealer vs independent shop, by parts and by miles. This is what owners reported, not a quote for your car.
Check the bills yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11311929, 11256928, 10748480, 10693370, 10494395, 10443262, 10410949, 10267357.
Quick answers
How much does wiring harness repair cost on a BMW 3 Series?
BMW 3 Series owners reported a median of $852, and the middle half paid $741 to $1,300, from 8 owner reports. Costs vary by shop and region.
Is a BMW 3 Series wiring harness repair more expensive than on other cars?
The BMW 3 Series middle bill of $852 is lower than the $1,200 owners of all 139 models we have reports for paid.
Where do these BMW 3 Series repair costs come from?
From 8 complaints to NHTSA: what owners themselves said they paid. They aren't verified bills or a shop's quote.
Sources: NHTSA owner complaints and YouTube videos (amounts said out loud), sorted by The Lemon Index. Owner reports, not a price quote. Costs vary by shop and region.