JAC T6: common problems, service schedule and fuel economy
What typically goes wrong on the JAC T6, at what mileage, and what keeping it right involves — from Brimly's Vehicle Knowledge Base, where every fault is checked by a human before publication.
- Years
- 2018–present
- Generations
- 1
- Engines
- 2
- Verified faults
- 3
1st gen (RU 2018+; rebadged Sollers ST6 from 2022) · 2018–present
2.0 turbodiesel · 136 hp · 2.0T (petrol) · 190 hp
Known problems
- Worth watching
Diesel DPF / EGR clogging and fuel-quality sensitivity
Symptoms: power loss, warning lights and more frequent regeneration cycles on the turbodiesel in short, low-speed city use; over time the EGR and DPF can soot up, and the Delphi Common Rail system tolerates poor diesel badly
What to do: Give the diesel regular longer runs at highway speed so the DPF can finish regenerating, use good-quality diesel and the correct low-ash oil, keep the fuel filter fresh and drain the water separator. If a regeneration warning appears, drive as instructed rather than ignoring it; have the DPF/EGR checked if power stays down.
- Worth watching
Engine oil leaks and oil-separator / cam-sensor issues
Symptoms: oil weeping at the block-to-gearbox joint, sump/pan and crank/cam seals; the PCV oil separator can leak. In one reported case a failing camshaft-position (phase) sensor let oil be forced out of the engine
What to do: Have the bellhousing area, sump and valve-cover/PCV checked for seepage at each service and re-seal weeping joints early. If oil consumption or crankcase pressure seems high, inspect the oil separator/PCV; scan for cam/crank-sensor faults if a phase/timing code appears.
- Good to know
Build-quality, NVH and thin service/parts support
Symptoms: owners describe assembly quality as merely adequate, an uncomfortable driver's seat, short gearing and elevated noise; official-dealer expertise is limited and parts can take around three weeks to arrive
What to do: Inspect trim, seals and fasteners on a used example, budget for occasional parts-wait times, and buy from a dealer able to support the truck. Treat the ergonomics and noise as characteristics of a budget work-oriented pickup.
Service schedule
| Item | Interval | Notes |
|---|---|---|
| Engine oil & filter change | every 6,000 mi (10,000 km) or 12 months | roughly 10,000 km; halve it for towing, heavy loads, dust or short trips. The diesel needs the correct low-ash (DPF-compatible) oil |
| Cabin filter | every 9,000 mi (15,000 km) | — |
| Fuel filter (diesel Common Rail) important | every 9,000 mi (15,000 km) | diesel only — the Delphi Common Rail system is sensitive to fuel quality; drain the water separator regularly. A DPF is fitted, so give the diesel periodic longer highway runs so it can regenerate |
| Air filter | every 19,000 mi (30,000 km) | shorten in dusty/off-road use |
| Timing drive & spark plugs important | every 25,000 mi (40,000 km) | the 2.0T petrol (HFC4GA3-4D) is chain-driven — inspect for noise rather than replacing on a fixed schedule, and change its spark plugs around 40k km. For the diesel, follow the owner's manual for its timing-drive service |
| Gearbox, transfer case & axle oils important | every 37,000 mi (60,000 km) | a body-on-frame 4x4 pickup: change the manual-gearbox, transfer-case and front/rear axle oils periodically, sooner under load/off-road use. Most cars are 6-speed manual; some later Sollers ST6 versions add an automatic, whose fluid should also be serviced |
| Brake fluid important | every 36 months | — |
Manufacturer-declared fuel economy
No manufacturer-declared figures for this model are in the Knowledge Base yet. A figure without the cycle it was measured under is not comparable to anything, so we publish none rather than a number you cannot interpret.
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Frequently asked
What are the most common JAC T6 problems?
The faults reported most often are: Diesel DPF / EGR clogging and fuel-quality sensitivity; Engine oil leaks and oil-separator / cam-sensor issues; Build-quality, NVH and thin service/parts support. Symptoms, the mileage each appears at and what to do about it are all above.
How often does the JAC T6 need servicing?
Engine oil & filter change — every 6,000 mi (10,000 km) or 12 months. The full published schedule is above; your car's own service book always takes precedence.
Where does this data come from?
Brimly's Vehicle Knowledge Base — the same verified facts the app's AI assistant answers from. Every fault is written up from public sources and then checked by a human before it is published; nothing here is generated on the fly.