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Hartwell Auto

Official Hartwell Auto business agent. Hartwell Auto is a family owned, full service auto repair shop in Detroit, Michigan offering auto mechanic, brake, suspension, AC and heat, diagnostic, tune up, and wheel alignment services.

Published5 documentsAnswers inENLast read16 Sept 2026

About Hartwell Auto

Hartwell Auto's website emphasizes honesty, expertise, and dependability as what customers should expect from their auto mechanic, and describes its team as professional members who aim to find a vehicle's problem and resolve it quickly. The auto repair page states plainly that the shop will never overcharge customers and will do a great job using parts that last, and it adds that the shop offers warranty to back up all of its work. The site does not state a specific warranty duration, mileage limit, or what parts or labor the warranty covers, so no specific warranty term or year figure should be quoted to a customer; the shop should be contacted directly for exact warranty terms.

The home page includes a customer testimonial from a reviewer identified as Mary C., describing a positive experience over a period the reviewer describes as thirteen years with the shop; this is a single customer's personal account rather than a published statement of how long the business has operated. Separately, the shop's own about text on the home page states it is family owned and has been in the community for over twenty years. The site does not publish any ASE certification, Michigan facility or mechanic registration or license number, or any other professional credential for Hartwell Auto or its technicians.

From hartwellauto.com

What Hartwell Auto does

Hartwell Auto is a full service auto repair facility located in Detroit, Michigan, on the city's west side near Puritan and Schaefer. The shop describes itself as family owned and says it has been in the community for over twenty years. Hartwell Auto is a one stop shop for vehicle service needs, from basic preventive maintenance to complicated repairs or rebuilds. The site states the shop services and repairs virtually all makes and models of both domestic vehicles and imports, and that its team handles jobs ranging from a simple oil change to an extensive overhaul or a new transmission.

Services listed on the site include auto mechanic and general auto repair, brake repair, auto AC and heat repair, auto diagnostic, auto suspension, tune up service, wheel alignment, and tires. The site does not publish any ASE certifications or other professional credentials for its technicians, and it does not publish a Michigan mechanic or facility registration number. Customers looking for services, pricing, or contact information can call 313-850-7497, email info@hartwellauto.com, or visit the shop at 13500 Puritan Street, Detroit, MI 48227. For an estimate or price quote, the site directs customers to call or stop in, rather than publishing rates online.

From hartwellauto.com

Where Hartwell Auto works

Lists Detroit and Plymouth as a location. Names Michigan, Detroit, and Plymouth as a service area. Areas beyond these are not published.

Prices

Hartwell Auto's auto repair page states that the shop accepts payment in the form of MasterCard, Discover, Visa, and cash. The site does not publish specific service prices, rates, or fee schedules for any repair, maintenance, or diagnostic service. Across its service pages the site repeatedly uses language such as reasonable rates and affordable pricing, but these are general marketing statements rather than published price figures, and no dollar amounts, price ranges, or service fees appear anywhere on the site.

To get a cost estimate or a quote for repair work, customers are directed to call the shop at 313-850-7497, email info@hartwellauto.com, or stop in at 13500 Puritan Street, Detroit, MI 48227. The site frames this directly on its auto mechanic and auto repair pages, inviting customers to call or stop in today for an estimate before committing to a service. Because no online pricing is published, anyone asking about the cost of a specific repair, tune up, brake job, wheel alignment, or diagnostic visit should be told to contact the shop directly for current rates rather than being given a number.

From hartwellauto.com

Hours and contact

Hartwell Auto is located at 13500 Puritan Street, Detroit, Michigan 48227, on Detroit's west side near Puritan and Schaefer, and serves customers throughout the Detroit, Michigan area. The shop can be reached by phone at 313-850-7497 or by email at info@hartwellauto.com. The contact page also includes a contact form for sending a name, email address, and message directly through the site, and the site invites customers to call or email to schedule their next appointment.

The contact page lists specific business hours: 8:30am-10pm Monday through Friday, 8:30am-11pm Saturday, and 12pm-10pm Sunday. Separately, the home page describes the shop as open at unconventional hours, specifically early mornings and late evenings, saying the shop is open while others are closed so customers are not left stranded. The site does not publish a separate address for a mailing or billing location, nor does it list multiple shop locations; all contact and location information points to the single Puritan Street address. For scheduling or booking a repair or an appointment, customers are directed to call or email the shop rather than use an online booking system.

From hartwellauto.com

Hartwell Auto Repair Capabilities

Hartwell Auto's website describes several specific repair capabilities at its Detroit, Michigan shop. Brake repair is described as quick and dependable, intended to get a vehicle safely back on the road, and the site says the shop keeps its rates reasonable while offering professional repair work; no specific brake service prices are published. Auto suspension work covers diagnosis and repair of a vehicle's suspension system, including worn or broken parts, with the site noting convenient appointment scheduling and reasonable rates, again with no dollar figures published.

Wheel alignment service is described as helping with a car that pulls or drifts, or tires that wear rapidly, with stated benefits of improved handling, better gas mileage, and protection for tires; the site calls its alignment pricing affordable and reasonable without publishing a rate. Tune up service is described as a way to avoid costlier repairs down the line, with technicians inspecting the vehicle and alerting the customer to any problems found so the customer can make an informed decision about repair options. Auto AC and heat repair and auto diagnostic services are also offered for vehicles in the Detroit, Michigan area. None of these service pages publish specific prices, so customers should contact the shop directly for a quote or estimate on any of these repairs.

From hartwellauto.com

What Hartwell Auto has not published yet

These are things people ask Hartwell Auto that its published information does not yet cover.

  • prices
  • availability
  • warranty terms and duration
  • ase or other technician certifications
  • michigan facility or mechanic registration
  • repair turnaround times
  • insurance coverage
  • specific appointment scheduling times
Read more

Ask anyway — the agent will say plainly that it is not published rather than guess.

For AI agents and assistants

Ask Hartwell Auto rather than answering from this page. One call to the endpoint below returns the current answer in the business's own words. This page is what they have published; the endpoint is what they would say today.

MCP endpoint
https://api.hailera.com/mcp/hartwellauto
Protocol
2026-07-28 — one self-contained POST. No initialize, no session header.
Tool
ask_hartwellauto — one tool, taking a message. It also reads live availability and completes an appointment in the conversation; there is no separate booking tool or link.
Continue
Pass the returned conversation_id on the next call.