DIY Auto Maintenance Market Research
Author: Jon Hedges
Jon has 40 years of marketing experience in the automotive aftermarket industry.
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Automotive do-it-yourself consumer profile
A recent DIY auto maintenance market research report, published by the Auto Care Association using analysis from Hanover Research, analyzes DIY (do-it-yourself) and DIFM (do-it-for-me) consumer behavior.
The focus of the original market research study was to investigate the primary motivations for DIY consumer and DIFM consumer behavior.
But Mike Chung, Auto Care Association’s Senior Director of Market Intelligence, generously gave Hedges & Company the opportunity to analyze the raw data from the original Hanover research. We used that to focus on this DIY car repair consumer study.
In this study, Hedges & Company examined the automotive maintenance that do-it-yourself consumers perform. We also looked at how they gather information to give them the skills and confidence to do it themselves, and what sources of information DIYers consider to be reliable.
DIY auto maintenance market research: The motivations
DIYers typically work on their own vehicles either to save money, exercise their self-reliance, to same time, or as a hobby.
There’s a wide spectrum of projects when it comes to types of vehicle maintenance, or vehicle enhancement projects, that these DIYers will tackle. It may be as simple as changing wiper blades, or as complex as working on an engine. Hard-core DIY automotive enthusiasts will take on more complex projects such as engine rebuilds and extensive vehicle customization.
Two important distinctions in this DIYer market research
Note: This market research analyzes 2 things. One is the percentage answers given by DIYers. The other is the increased likelihood for DIYers to do something, compared to a DIFM consumer. This is an important distinction and is a way to distinguish DIY from DIFM behavior. It also give more insight into the DIY auto maintenance market, for marketing purposes. Below, we italicize which thing we’re comparing.
Top reasons to do DIY maintenance
According to the Hanover data, the top three reasons DIYers do their own vehicle maintenance and repair are saving money; having self-reliance and independence; and the convenience and flexibility of DIY activity.
The market research had interesting findings on automotive DIY consumer demographics. DIYers are more likely than DIFM consumers to have an annual household income in two ranges: $60,000 to $79,999 and $100,000 and $149,999.
DIYers watch a lot of shows and programs on vehicle maintenance
DIYers tend to either be self-employed, stay-at-home parents, or employed full-time. DIY auto maintenance consumers are 51% more likely to “strongly agree” with the statement, “I frequently look at shows/programs related to vehicle maintenance and care.” Shows and programs can include cable TV or streaming.
Hedges & Company also analyzed the number of automotive DIY consumers in the US in a separate article. There are nearly 26 million DIYers and automotive enthusiasts in the US.
Automotive DIY consumers skew younger than DIFM consumers. Exactly half of all DIYers are 18-44 years old, compared to 38% of DIFM consumers. 62% of DIFM consumers are 45 and older, vs. 50% for DIYers.
DIY auto maintenance market size
The Auto Care Association annual Factbook, is the aftermarket’s “gold standard” for measuring the automotive repair and maintenance market.
According to 2026 Factbook, the DIY auto maintenance market in the US grew about 65% from 2017 to 2025. That works out to a 5.3% compounded annual growth rate (CAGR). The DIFM auto parts market grew about 53% in that same time frame, for a 9.8% CAGR. The DIY auto maintenance market has historically been 19%-20% of the total parts market. Even though the DIY market is smaller than the DIFM market, the 5.3% CAGR is a very respectable growth rate and exceeds many other US markets.
This growth was also partially fueled by the pandemic. There was a big spike in DIY behavior in 2020 and 2021. Post-pandemic DIY market share returned to normal but a lot of consumers that turned to DIY during the pandemic continued with DIY.
DIY market nearly $68 billion
Retail sales for the DIY market were nearly USD$68 billion, up from nearly USD$66 billion in 2023.
Today the automotive aftermarket supports nearly 26 million automotive do-it-yourselfers (DIYers) and automotive enthusiasts in the US in 2025[2]. A Hedges & Company analysis shows that automotive enthusiasts represent 9.6% of the 2025 US population that is over 18 years old[3].
What maintenance projects DIYers work on
Click to make larger: What DIYers work on.
The most commonly performed automotive DIY projects include changing oil, transmission fluid or brake fluid; rotating tires; changing wiper blades and fluid; and general maintenance and tune-up.
The Hanover data also compares DIY to DIFM consumer activity, not just what activity is performed. It shows DIYers are 71% more likely than DIFMs to do maintenance on the lighting system or exhaust system of a vehicle. They are also 52% more likely to do maintenance on the cooling system or steering system; 46% more likely on the electrical/charging system; and 42% on the suspension system.
DIY auto repair by vehicle make
The top two makes for DIYers are American-based Ford and Chevrolet. This is followed by Asian makes Toyota, Honda and Nissan. On the other hand, the top makes for DIFM consumers are Toyota and Chevrolet.
Vehicle makes more likely to have DIY work performed
DIYers are 74% more likely to work on Volkswagen vehicles; 57% more likely to work on Chrysler brand vehicles; 20% more likely to work on Chevy vehicles; and 19% more likely to work on Fords and BMWs (tie).
DIYers are less likely to work on Asian brands. DIFM consumers are 36% more likely to have work performed on Mazdas; 28% more likely on Hyundais; 21% on Subarus; and 9% on Nissans.
The American brand Buick is also more likely to get DIFM work done, at 25%.
DIY auto maintenance market research: Sources of information
The research looked at where DIY consumers go to get information on how to complete their projects. Understandably, YouTube was a top source, with DIYers 81% more likely to look at YouTube, which is sometimes called the “world’s second-largest search engine.” 
Other sources identified as more likely are: reading online articles, 66% higher; consulting mobile apps dedicated to vehicle maintenance, 58%; reading DIY auto maintenance forums and online communities 55%; and consulting consumer review websites, 51%.
Manufacturers should note that DIYers are 17% more likely than DIFMs to specifically seek out manufacturer websites for information.
Reliability of information sources
DIYers had widely varying opinions on the reliability of information sources.
The most reliable information came from visiting an auto repair shop, which 90% of DIYers said was either “somewhat reliable” or “extremely reliable.” Visiting an auto parts store and consulting the owner’s manual came in next at 89%.
Online search and YouTube are next at 88% and 87%, respectively. Manufacturer websites and mobile apps are both at 85%.
Magazines are at 82%, and social media was significantly below that, with 73% of DIYers considering social media as a reliable source of information.
Other vehicles owned
DIYers are 66% more likely than DIFMs to own five or more vehicles. They’re also 24% more likely to own a popular pickup truck.
In addition to a car or truck, automotive DIY consumers are 73% more likely to have a scooter; 50% more likely to have a motorcycle; 42% more likely to have an RV; 48% more likely to have an ATV; and 30% more likely to have a boat.
The average model year for the primary vehicle owned by automotive DIYers was 2013, vs. 2016 for DIFM consumers. (Maybe DIYers are contributing to the rising average age of cars!)
Frequency of DIY activity
Automotive DIY consumers perform frequent vehicle maintenance on their primary vehicle. They are 32% more likely to do service maintenance every 3,000 miles or 3 months. They’re also 37% more likely to do maintenance based on specific driving conditions.
On the other hand, DIFM consumers are 37% more likely than DIYers to admit to doing service maintenance less frequently than every 10,000 miles or every 12 months. (Tip: If buying a used car from an individual, find out if they’re a DIYer!)
Automotive DIYers do more vehicle maintenance
Automotive DIYers are 51% more likely to do maintenance based on seasonal changes. They’re also 50% more likely to do maintenance in advance of a trip, 48% more likely to do maintenance in response to a change in vehicle performance, and 32% more likely in response to fluid leaks.
Methodology used in this DIY auto maintenance market research report
The DIY auto maintenance market research was conducted by Hanover Research at the direction of the Auto Care Association. The research was completed in January 2024. Hanover surveyed U.S. adults who own a personal vehicle, are involved in maintenance decisions, recently performed maintenance or service on their vehicle, and don’t work in the automotive repair industry. The survey was administered online, and respondents were recruited through an online panel. The analysis includes a total of 1,081 respondents after data cleaning and quality control.
Frequently asked questions
Q: What motivates automotive DIY consumers to perform their own vehicle maintenance?
A: According to a 2024 market research report by the Auto Care Association, the top reasons for performing their own vehicle maintenance include saving money, self-reliance, and the convenience of DIY activities.
Q: How has the DIY auto maintenance market grown in recent years?
A: The DIY auto maintenance market experienced significant growth between 2017 and 2024, with a 59% increase, equating to a 5.96% compounded annual growth rate (CAGR). This growth indicates a rising trend of consumers opting to perform their own vehicle maintenance and repairs.
Q: What are the demographic characteristics of DIY auto maintenance market consumers?
A: DIY auto maintenance market consumers tend to have annual household incomes ranging from $60,000 to $79,999 and $100,000 to $149,999. They’re typically self-employed, stay-at-home parents, or employed full-time. Additionally, DIY consumers tend to be younger, with 50% between 18 and 44 years old.
Q: Where to DIYers get information on how to complete their projects?
A: Automotive DIY consumers are 81% more likely than non-DIYers to look at YouTube, and 66% more likely to read online articles. They are 17% more likely to seek out manufacturer websites for information.
This article is copyrighted, but it’s polite to share! This content is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License and can be distributed or quoted, with attribution given to Hedges & Company, and a link back to this article from your website. The statistics on DIY consumers are directly from the Hanover market report done for the Auto Care Association, with kind permission granted from the Auto Care Association. Other statistics from the Auto Care Factbook proprietary and are rounded, while the actual figures are available to Auto Care Association members.
[2]Calculation based on Hearst 2022 Auto Enthusiast Study showing enthusiasts spend $2,846 per year, then adjusted for inflation to $3,193 in 2024 based on CPI; total auto care sales to DIY end users in 2024 in the Auto Care Association Channel Forecast Model of $81.5 billion. The calculation shows 25,534,500 automotive do-it-yourselfers and enthusiasts in the US in 2024. The resulting percentage of 9.6% of the US population over the age of 18 also aligns with previously reported percentages in recent years in market research reports from SEMA and Auto Care Association.
[3]Calculation based on US Census Bureau estimate of population over 18 in 2024 at 266.9 million people and the above calculation showing 25,534,000 automotive do-it-yourselfers and enthusiasts in the US in 2024.
