Pre-Purchase Inspection

Comprehensive pre-purchase inspection of a 2016-2021 Honda Civic with 1.5L turbo engine to identify existing or potential mechanical, electrical, and safety issues before purchase.

Warnings

Tools required

Preparation

1. Verify vehicle VIN matches title and documentation
2. Start engine and let idle to reach operating temperature while conducting exterior inspection
3. Position vehicle on level surface with adequate lighting
4. Gather vehicle history report (Carfax/AutoCheck) for reference during inspection

Procedure

1. 1

   Scan for diagnostic trouble codes
   Connect OBD-II scanner to diagnostic port located below driver-side dashboard. Retrieve all stored and pending codes from all modules (PCM, TCM, ABS, SRS). Document all codes even if check engine light is not illuminated. Check for any evidence of recent code clearing which may indicate seller concealment.
2. 2

   Inspect engine compartment and fluid condition
   Open hood and inspect for accident damage, mismatched paint, or aftermarket modifications. Check engine oil level on dipstick and inspect color/consistency - oil should be amber to light brown; check for fuel smell indicating dilution issue common in this engine. Inspect coolant reservoir for proper Honda Type 2 Blue coolant level and color (should be blue, not rusty or brown). Check brake fluid reservoir for DOT 3 level and clarity. Inspect for any fluid leaks on engine, transmission, and surrounding components. Check battery terminals for corrosion and test battery voltage with multimeter (should read 12.4-12.8V engine off).
3. 3

   Inspect turbocharger and intake system
   Remove air box clips to access intake tract. Inspect turbocharger inlet and compressor blades for oil residue indicating turbo seal failure. Check intercooler piping and connections for oil accumulation. Inspect PCV system and hoses for proper connection. Look for aftermarket blow-off valves or intake modifications that may void warranty. Reinstall air box and secure clips.
4. 4

   Check for CVT transmission issues
   With engine at operating temperature, check CVT fluid level through dipstick (if equipped) or fill plug. Fluid should be pink/red and not smell burnt. Start engine and shift through all gear positions (P-R-N-D-L) checking for smooth engagement. Test drive vehicle and listen for whining, juddering, or slipping during acceleration. The CVT should operate smoothly without hesitation. Check for any fluid leaks around transmission housing and cooler lines.
5. 5

   Lift vehicle and inspect undercarriage
   Raise vehicle using floor jack at designated lift points and secure on four jack stands. Inspect entire undercarriage for accident damage, rust, or corrosion. Check exhaust system from manifold to tailpipe for leaks, damage, or aftermarket modifications. Inspect catalytic converter for physical damage or signs of theft attempt. Examine frame rails and subframe for bends, cracks, or poor repair work. Check for oil pan damage or leaks.
6. 6

   Inspect suspension and steering components
   While vehicle is raised, inspect all four struts/shocks for leaks or damage. Check control arm bushings, ball joints, and tie rod ends for excessive wear or play. Inspect CV axle boots for tears or grease leakage. Check sway bar links and bushings. Rock wheels to check for wheel bearing play. Inspect steering rack boots for tears and check for power steering leaks (note: this vehicle uses electric power steering with no fluid).
7. 7

   Inspect brake system components
   Remove all four wheels and inspect brake pads for remaining thickness (minimum 3mm). Measure brake rotor thickness and check for scoring, warping, or excessive rust. Inspect brake calipers for leaks and proper piston condition. Check brake lines and hoses for cracks, bulges, or corrosion. Verify parking brake cables move freely and are not seized. Reinstall wheels and torque lug nuts in star pattern.
8. 8

   Inspect tires and alignment indicators
   Measure tread depth on all four tires using depth gauge (minimum legal is 2/32", recommend replacement at 4/32"). Check for uneven wear patterns indicating alignment issues, suspension problems, or improper inflation. Verify all tires are same brand and size. Check tire sidewalls for cracks, bulges, or damage. Note tire age from DOT date code (tires over 6 years old should be replaced regardless of tread). Check tire pressures against door placard specification.
9. 9

   Test electrical systems and accessories
   Test all exterior lights (headlights, taillights, brake lights, turn signals, reverse lights) for proper operation. Check all interior lights, gauge cluster illumination, and warning lights. Test power windows, locks, mirrors, and sunroof (if equipped) for proper operation. Test climate control system in all modes (heat, A/C, defrost, fan speeds). Verify infotainment system, backup camera, and all USB/12V ports function. Test horn and windshield wipers/washers.
10. 10

    Road test and performance evaluation
    During test drive, verify engine reaches operating temperature normally. Accelerate moderately and check for turbo boost response without hesitation or unusual noises. Test braking from various speeds checking for pulls, vibrations, or noise. Evaluate steering for proper feel, centering, and no vibrations. Listen for wind noise, rattles, or unusual sounds. Test CVT transmission under various loads ensuring smooth operation. On highway, verify no vibrations at speed and stable tracking. Check cruise control operation if equipped.
11. 11

    Inspect body and paint condition
    Inspect all body panels for paint match, overspray, or evidence of bodywork. Check panel gaps for uniformity indicating no accident damage. Open and close all doors, hood, and trunk checking for proper alignment and operation. Inspect weatherstripping for tears or deterioration. Check for rust in common areas: wheel wells, rocker panels, door bottoms, and trunk floor. Verify VIN plates are intact and match documentation.
12. 12

    Inspect interior condition and safety systems
    Check all seats for wear, tears, or stains. Test all seat adjustments and seatbelt operation. Verify airbag warning light follows normal sequence (illuminates at key-on, extinguishes after start). Check for any dashboard warning lights that remain illuminated. Inspect carpet and headliner for water stains indicating leaks. Test all door locks and latches. Check for any unusual odors (mold, burning, fuel) that may indicate problems.

Reassembly

1. Ensure all wheels are properly torqued to specification in star pattern
2. Verify all engine covers, air box, and inspection panels are reinstalled properly
3. Clear any inspection-related codes if OBD-II scanner was used in active testing mode

Verification

• Review all documented codes, measurements, and observations with potential buyer
• Provide written summary of any safety concerns, immediate repairs needed, and upcoming maintenance items
• Verify no tools or equipment left in engine bay or under vehicle
• Recommend specialized inspections if major concerns found (compression test, leak-down test, transmission service)
• For 2016-2018 models specifically, advise buyer about oil dilution TSB and extended warranty coverage if applicable

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