Generations
TF_Gen1 — First Generation
1997–2019
2.5 Diesel
Top issues to watch for
The most serious Isuzu Tf problems ranked by severity. We track 5 known issues — here are the ones you need to know about first.
Dangerous
Chassis spring fracture (TF_Gen1)
The coil springs or leaf springs fracture at an exceptionally high rate on this model, with MOT data showing failures at 337 times the national fleet average. This affects all mileage bands from 40,000 miles upwards and is worsening year-on-year. Spring failure on a commercial vehicle can cause sudden loss of control, especially when loaded, and represents the most dangerous documented failure mode for this model.
What happens if ignoredA fractured spring can separate completely during driving, causing sudden loss of vehicle control, wheel misalignment, and potential contact between tyre and bodywork. On a loaded commercial vehicle this presents extreme danger. Immediate replacement required - vehicle should not be driven with suspected spring failure.
Independent garage
£200–£400
Specialist
£300–£500
Main dealer
£500–£800
Parts only
£80–£200
Dangerous
Load bearing structure corrosion (TF_Gen1)
Vehicle structure corrodes to the extent that rigidity is seriously reduced, with failures occurring at 23 times the national fleet average. This affects the load-bearing structure within 30cm of towbar mounting points at 53 times the fleet average. Commercial vehicle exposure to salt, moisture, and loading stress accelerates structural corrosion, particularly around chassis mounting points and load-bearing sections.
What happens if ignoredStructural corrosion reduces the vehicle's ability to handle loads safely and may compromise crash protection. In severe cases, mounting points can separate under load, causing loss of vehicle control. This is a dangerous defect requiring immediate professional assessment. Vehicle should not carry maximum payload until repairs are completed.
Independent garage
£800–£2,000
Specialist
£1,000–£2,500
Main dealer
£1,500–£3,500
Parts only
£200–£800
Major
Suspension bush and joint excessive wear (TF_Gen1)
Suspension pins, bushes and joints wear at 269 times the national fleet average, making this the second most common MOT failure point. The high failure rate affects all mileage bands from 40,000 miles and is worsening consistently. Commercial vehicle duty cycles and payload stress accelerate rubber bush degradation, leading to poor handling, tyre wear, and potential MOT failures.
What happens if ignoredWorn suspension bushes cause poor vehicle control, accelerated tyre wear, and MOT failure. While not immediately dangerous, deterioration of multiple bushes significantly affects handling safety, especially on a loaded commercial vehicle. Replacement costs multiply if multiple components need attention simultaneously.
Independent garage
£150–£300
Specialist
£200–£400
Main dealer
£350–£600
Parts only
£50–£150
Major
Wheel bearing excessive play (TF_Gen1)
Wheel bearings develop excessive play at 37 times the national fleet average, affecting all mileage bands from 40,000 miles upwards. Commercial vehicle loading and duty cycles accelerate bearing wear, particularly in the rear axle which carries the primary payload. Failed bearings cause noise, vibration, and potential wheel detachment if not addressed promptly.
What happens if ignoredWorn wheel bearings cause noise, vibration, and uneven tyre wear. Complete bearing failure can result in wheel detachment, representing a severe safety hazard particularly on commercial vehicles. Replacement typically requires specialist tools and bearing pullers, making this a workshop job rather than roadside repair.
Independent garage
£120–£250
Specialist
£150–£300
Main dealer
£250–£450
Parts only
£40–£120
1 more known issues tracked
Including wear items, electrical niggles, and generation-specific problems.
MOT failure hotspots
Based on DVSA MOT test data. These are the items where the Isuzu Tf fails at a significantly higher rate than the average car.
Coil springs broken
Suspension · 40-60k miles
MOT failure rate: 338x the fleet average
Sample: 738 tests
Towbar fault
Bodywork · 60-80k miles
MOT failure rate: 233x the fleet average
Sample: 694 tests
Transmission joint, belt or chain worn
Bodywork · 80-100k miles
MOT failure rate: 144x the fleet average
Sample: 2,271 tests
Wheel bearings worn
Suspension · 20-40k miles
MOT failure rate: 44x the fleet average
Sample: 175 tests
ABS fault
Suspension · 20-40k miles
MOT failure rate: 37x the fleet average
Sample: 175 tests
Light unit fault
Lights & Electrics · 60-80k miles
MOT failure rate: 31x the fleet average
Sample: 694 tests
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Related
Isuzu Tf reliability FAQs
What are the most common problems with the Isuzu Tf?
The Isuzu Tf has 5 known issues across 3 severity levels. The most serious are: Chassis spring fracture (TF_Gen1), Load bearing structure corrosion (TF_Gen1).
Is the Isuzu Tf reliable?
The Isuzu Tf has 2 dangerous and 2 major known issues. Most can be avoided with a thorough pre-purchase check and full service history.
How much does it cost to fix Isuzu Tf problems?
Repair costs range widely. The most significant issue (Chassis spring fracture (TF_Gen1)) costs £200–£400 at an independent garage. Minor issues can be under £200. Always get a full inspection before buying.