Pre-Purchase Inspection Checklist

2018 Mazda Mazda6 pre-purchase inspection checklist

What to check before you buy, built from NHTSA recall data, owner-reported failures, and mechanic intel. Print it or bring it to your mechanic.

Pre-purchase inspection · 2018 Mazda Mazda6
Check another vehicle
2018 Mazda Mazda6
Sport / Touring / Grand Touring / Signature (GJ, 3rd gen, 2014-2021)
Low Risk

The GJ Mazda6 is one of the best midsize sedans ever built — genuinely premium interior quality, engaging chassis, and excellent reliability. Discontinued in North America after 2023, making used supply finite. The 2.5T Turbo (Signature/Grand Touring) is a meaningful upgrade. No significant failure modes documented. Outstanding value against Accord and Camry.

Items to check
12
Open recalls
1
NHTSA complaints
55
Top concern
Minimal — limited cargo space / discontinued availability

Powertrain

2.5L SkyActiv-G reliability

Low Risk
No significant failure modes documented.
Standard pre-purchase check.
Est. cost: Maintenance only Source: Mazda SkyActiv track record

2.5T Turbo oil maintenance

Monitor
Turbo variant requires synthetic oil every 5k miles.
Verify oil condition and service history.
Est. cost: Maintenance only if serviced Source: Mazda service standard

Transmission

6-speed automatic fluid condition

Low Risk
Mazda 6AT is reliable. Fluid change every 60k miles.
Check fluid color.
Est. cost: $200–$350 fluid service Source: Mazda service interval

Electrical

Mazda Connect with rotary dial

Low Risk
Polarizing but reliable. CarPlay available on 2018+.
Test all infotainment.
Est. cost: $0 update Source: Mazda campaigns

Body

Trunk space awareness

Low Risk
Mazda6 trunk is slightly smaller than Accord/Camry due to sportier roofline.
Load your typical luggage to verify fit.
Est. cost: N/A — preference Source: Consumer experience

Documentation

Service history + recall check

Low Risk
Two recalls possible. Well-serviced Mazda6 is outstanding.
Run nhtsa.gov/recalls.
Est. cost: Standard Source: NHTSA

NHTSA Recalls (verify completion via VIN)

21V-875
Denso Fuel Pump
Fuel pump may crack and fail — stall risk. 2018–2020 Mazda6; free replacement (Mazda 5321K).

What the VIN tells you

Two engines share the 2018 GJ Mazda6 — confirm which you are buying. The naturally-aspirated 2.5L SkyActiv-G (PY-VPS, 187 hp) powers Sport and Touring; the turbocharged 2.5T SkyActiv-G (PY-VPTS, 227 hp on 87 octane / 250 hp on 93) powers Grand Touring, Grand Touring Reserve, and Signature. Mazda encodes the engine in the 8th VIN character, but the reliable tell is trim badge plus the physical turbo/intercooler plumbing the NA car lacks. Match trim to engine: a Signature with no turbo, or a Sport claimed as 2.5T, is a red flag.
After you buy: common DIY repair guides
Planning the upkeep this car will need? Our step-by-step guides cover oil changes, brake pads & rotors, battery replacement, transmission fluid, coolant flushes, and spark plugs — each with the tools, parts, torque specs, and common mistakes that matter. Browse all repair guides →

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