Suzuki Jimny JB74: common faults & what to check

You're looking at the JB74 · 1.5 petrol

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2018–nowJB74 Selected2018–nowJB741.5 petrolPetrolDocumented issues16 knownSee faults & what to checkKickTyres illustration, not a photograph.

Now narrow it to the engine

A 1.8 and a 2.4 of the same car do not fail the same way, so the faults below narrow to the engine as well as the year. Free, no account needed.

Start your free check on this Suzuki Jimny

No plate needed. You get the risk score, the buyer's checklist and the guided inspection for the exact car you picked above — not the whole nameplate.

The checks worth doing on a Suzuki Jimny before you hand over any money. Every documented fault is listed below, each with its own page.

• Serious issue

  Probe suspect areas with a screwdriver — any give or flaking indicates advanced rot.

  See why

  Chassis and underbody rust (JB74 Jimny, 2018 on)

  The JB74W body-on-frame construction uses a steel ladder chassis with no factory cavity wax or internal rust protection in the main rails, cross-members, or body mount pads. New-vehicle corrosion has been photographed from within a few years of manufacture, particularly in regions using road salt or vehicles imported from Japanese snow-belt prefectures (Hokkaido, Tohoku, Niigata). Critical failure points are the body mount towers just ahead of the rear wheels, suspension turret welds, and the interior seams of the main chassis rails. Rust in these locations compromises structural integrity and can cause NZ/AU warrant-of-fitness failures.

  What you would notice

  • Rust staining running out from inside the chassis rails or from behind plastic wheel arch trim
  • Flaking or bubbling paint on the underside of frame rails and cross-members
  • Soft or crumbling metal at body mount pads when probed
  • Visible rust scaling at suspension turret welds
  • WOF/roadworthy failure due to structural corrosion

  Typically $800–$5,000 to put right.

• Serious issue

  Check brake pad surfaces for glazing or oil saturation — contaminated pads have a glazed, dark appearance.

  See why

  Front Diff Stub Axle Seal — Brake Contamination

  The front differential stub axle oil seals on the JB74 Jimny are prone to weeping and failure, particularly after off-road use involving water crossings, deep mud, or heavy suspension articulation. When the stub axle seal fails, 75W-90 gear oil migrates along the axle shaft into the front hub bearing area and onto the brake rotor and pads. Oil-contaminated brake pads lose a substantial portion of their friction coefficient, creating a severe and sudden reduction in front braking performance. This fault is well documented in the NZ and AU Jimny community given the vehicle's widespread use on gravel roads, beaches, and river crossings. Affected vehicles may show no external oil leak visible from the outside without removing the wheel.

  What you would notice

  • Gear oil smell from front wheel area when hot
  • Reduced or inconsistent front brake pedal feel
  • Squealing or glazed brake pads on one or both front wheels
  • Visible oil staining on the inside face of the front wheel rim
  • Front differential oil level dropping with no visible external puddle

  Typically $650–$1,200 to put right.

• Costly issue

  Test all range selections — 2H, 4H, 4L — on a loose surface.

  See why

  Transfer Case Hi-Lo Range Selector Binding and 4WD Engagement Failure

  The JB74W uses a part-time 4WD system with a mechanical lever to select 2H, 4H, and 4L. Owners and technicians widely document difficulty engaging or disengaging 4L in particular, with the lever requiring excessive force or refusing to move without rocking the vehicle. A missing or worn selector bush under the shift lever is a confirmed cause of loose or non-engaging selectors. Additionally, the transfer case position sensor connector is prone to moisture ingress, causing the 4WD indicator to blink once without engaging, or intermittent 4H/4L switching faults.

  What you would notice

  • Transfer case lever requires abnormal force or becomes stuck switching to or from 4L
  • 4WD dash indicator blinks once then extinguishes without engaging 4WD
  • Intermittent failure to shift between 4H and 4L
  • Grinding or crunching sensation when attempting range change
  • Vehicle gets stuck in 4WD-L and cannot return to 2H

  Typically $350–$2,200 to put right.

• Costly issue

  Test handbrake holding ability on a 10-degree gradient and count the number of clicks required.

  See why

  Rear Drum Brake Adjuster Seized — Salt & Gravel

  The JB74 Jimny retains conventional rear drum brakes with a mechanical self-adjuster mechanism comprising a star wheel and lever that should ratchet the shoes outward as the linings wear. In the NZ and AU environment — where vehicles encounter coastal road salt, river silt, beach sand, and abrasive metal-contaminated gravel — the adjuster star wheel and its lever corrode and seize solid, preventing automatic shoe travel adjustment. A seized adjuster results in progressively increasing handbrake travel, soft or long brake pedal requiring excess travel, rear brake under-performance, and uneven brake force distribution. The fault is aggravated by the Jimny's widespread off-road use and is one of the most commonly cited brake issues in the JB74 NZ community.

  What you would notice

  • Handbrake requiring significantly more clicks to hold on a gradient
  • Rear brake pedal feeling soft or requiring pumping to firm up
  • Increased stopping distance with apparent rear brake lag
  • Grinding or metallic scraping noise from rear when reversing
  • Rear wheel lockup occurring before front wheels under hard braking

  Typically $380–$750 to put right.

• Costly issue

  Spin wheel by hand and listen for roughness or grinding.

  See why

  Front hub / wheel bearing failure

  Jimny's tall narrow body places lateral cornering loads on relatively small front wheel bearings. Off-road use, low-speed rock crawling and repeated water crossings accelerate bearing degradation. Failure rate is elevated compared to mainstream small SUVs and is documented across all SJ and JB generations including the JB74. Bearings are typically a press-fit unit requiring hub removal.

  What you would notice

  • Growling or humming noise from front that changes pitch with speed
  • Noise increases or decreases when steering slightly left or right at highway speed
  • Vibration felt through steering wheel at 80–100 km/h
  • Loose or notchy feeling when hub is rocked with wheel off ground

  Typically $280–$520 to put right.

• Costly issue

  Transfer case drive chain stretches with use causing rattling, especially audible on 4WD engagement.

  See why

  Transfer case drive chain rattle when pulling away (JB64/JB74 Jimny, 2018 on)

  On the 2018-on JB64/JB74 Jimny, the drive chain inside the transfer case can vibrate and make a grinding or rattling noise when pulling away, mostly in first gear at around 2,000 rpm. Suzuki issued a dealer bulletin and parts kit for it, and some owners have had the chain or the whole transfer case replaced under warranty, though the noise came back on some cars. On a test drive, pull away gently in first and listen for a rattle from under the gear levers, and ask whether any transfer case work has been done.

  What you would notice

  • Transfer case drive chain stretches with use causing rattling, especially audible on 4WD engagement.
  • Confirm with pre-purchase inspection by a qualified mechanic

What these repairs cost on other cars

Some of the Suzuki Jimny’s documented faults are repairs other models share. Each page lists the documented NZ cost for every model it affects.

• Timing Chain Replacement Cost
• Head Gasket Repair Cost
• Turbo Repair and Replacement Cost

Other Suzuki models