The Lemon Index$1,000 middle bill · most between $800 and $1,300
About the same as the $1,000 middle bill owners of all 53 models reported.
2010–2011 Mazda CX-9
Mazda CX-9 owners reported paying a median of $1,000 for a brake booster replacement, with the middle half of bills between $800 and $1,300. That's from 5 owner reports (5 complaints to NHTSA). Costs vary by shop and region.
What owners paid
- Under $5000%
- $500–$1,00040%
- $1,000–$2,50060%
- $2,500–$5,0000%
- $5,000 and up0%
Share of the 5 owner reports in each price band.
By model year
- 2010 Mazda CX-94$1,200 middle bill
- 2011 Mazda CX-91too 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.
How often owners report the failure
- 2012 Mazda CX-953 complaints name it24% of that year's complaints
- 2010 Mazda CX-941 complaints name it21% of that year's complaints
- 2011 Mazda CX-939 complaints name it23% of that year's complaints
- 2008 Mazda CX-914 complaints name it8% of that year's complaints
- 2013 Mazda CX-99 complaints name it13% of that year's complaints
Owner complaints to NHTSA whose own words name a brake booster / hard pedal. Raw counts: popular years get more complaints. A complaint is a report, not proof of a defect.
Keep going
- Mazda CX-9 reliability by year
- Brake booster replacement cost on every car
- Car symptoms and what they can mean
Other repairs Mazda CX-9 owners reported
Engine replacement (11) · Water pump replacement (6)
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): 11609995, 11429182, 11012162, 10909392, 10535955.
Quick answers
How much does brake booster replacement cost on a Mazda CX-9?
Mazda CX-9 owners reported a median of $1,000, and the middle half paid $800 to $1,300, from 5 owner reports. Costs vary by shop and region.
Is a Mazda CX-9 brake booster replacement more expensive than on other cars?
The Mazda CX-9 middle bill of $1,000 is about the same as the $1,000 owners of all 53 models we have reports for paid.
Where do these Mazda CX-9 repair costs come from?
From 5 complaints to NHTSA: what owners themselves said they paid. They aren't verified bills or a shop's quote.
Which Mazda CX-9 years report this failure most?
In complaints to NHTSA, owners of the 2012 (53), 2010 (41), 2011 (39) Mazda CX-9 named it most. Raw counts, not a failure rate.
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.