Nissan Juke 1.2 DIG-T (2014-2019): Common Faults and What to Check Before You Buy

If you’re thinking about a used Nissan Juke with the 1.2 DIG-T engine, you’re probably drawn in by its quirky looks and low running costs. That’s fair enough—but this particular engine, codenamed H5FT, has a handful of common faults that could turn a cheap buy into an expensive mistake. Here’s what to look out for and how to check a car properly before you part with your money.

The H5FT engine: what you’re dealing with

The 1.2 DIG-T is a 1.2-litre turbocharged four-cylinder petrol engine, found in the Juke from 2014 to 2019. It produces around 115bhp and can return decent fuel economy if driven gently. It uses a timing chain (not a belt), direct injection, and a small turbocharger. Those components are where most of the known issues live.

Common faults to watch for

1. Timing chain rattle

This is the big one. The timing chain on the H5FT engine can stretch over time, especially if oil changes have been skipped. You’ll hear a distinctive rattle from the front of the engine on cold start, lasting a second or two before it quietens down. If ignored, the chain can jump a tooth or even snap, causing serious engine damage.

Symptoms:

• Metallic rattle on cold start, especially from the front of the engine.
• Rattle that gets worse as the engine warms up (in advanced cases).
• Rough idle or misfire if the timing has slipped.

Typical cost: £500–£800 at an independent garage, £900+ at a main dealer. If the chain has already jumped, you could be looking at a new engine.

Pre-purchase check: Always listen to a cold start. The seller should let the engine sit for a few hours before you arrive. If you hear that rattle, walk away or budget for a chain replacement.

2. Turbo wastegate failure

The turbocharger’s wastegate actuator can stick or fail, leading to boost problems. You might notice a loss of power, especially under acceleration, or a rattle from the turbo area. The engine management light often comes on, with fault codes like P0299 (turbo underboost) stored.

Symptoms:

• Noticeable lack of power, particularly when overtaking or climbing hills.
• Rattling or buzzing noise from the turbo area under acceleration.
• Engine management light on, often with a P0299 or P0234 code.
• Excessive smoke from the exhaust.

Typical cost: A new turbo fitted is £800–£1,200. Sometimes the actuator can be replaced separately for less, but many garages will push for a full turbo replacement.

Pre-purchase check: On a test drive, find a safe stretch of road and accelerate hard in third gear from around 2,000rpm. You should feel a strong, smooth surge of power. If it feels flat, hesitant, or you hear a rattle, the turbo is suspect.

3. Oil consumption

Some oil use is normal for a small turbo engine, but the H5FT can suffer from excessive consumption. Worn piston rings or a faulty PCV valve are common culprits. If you’re topping up more than half a litre per 1,000 miles, that’s a problem.

Symptoms:

• Needing to top up oil frequently between services.
• Blue smoke from the exhaust, especially on start-up or under acceleration.
• Low oil warning light appearing.
• Oil stains on your driveway.

Typical cost: A PCV valve is cheap at £50–£150 fitted. If the piston rings are worn, you’re looking at £1,500+ for an engine rebuild or a replacement engine.

Pre-purchase check: Check the oil level on the dipstick—it should be between min and max, and the oil should look reasonably clean. Ask the seller how often they top up. If they’re vague, be suspicious. Also look for blue smoke on start-up.

4. Electrical and infotainment gremlins

The Juke’s infotainment system and electricals can be temperamental. Common complaints include the touchscreen freezing, Bluetooth dropping out, sat-nav errors, and battery drain. Sometimes it’s just a software glitch, but a failing head unit or a weak battery can also be to blame.

Symptoms:

• Touchscreen unresponsive or slow.
• Bluetooth or USB connectivity issues.
• Sat-nav giving incorrect directions or failing to load.
• Battery going flat overnight, especially in cold weather.
• Central locking or electric windows playing up.

Typical cost: A software update might be free or up to £50. A replacement head unit is £300–£600. A new battery is £100–£200.

Pre-purchase check: Test every electrical function: windows, mirrors, air con, radio, Bluetooth, USB, 12V sockets, reversing camera, and central locking. Check the battery health if you can—a multimeter or a quick test at a garage will tell you if it’s on its way out.

Pre-purchase checklist: how to inspect a used Juke 1.2 DIG-T

Here’s a practical checklist to run through before you buy:

• Cold start: Make sure the engine is cold when you arrive. Listen for any rattle from the timing chain. A healthy engine should start smoothly and settle into a quiet idle.
• Oil level and condition: Pull the dipstick. Oil should be between min and max, and not black and sludgy. Regular oil changes are critical for this engine.
• Service history: Look for a full service history, ideally annual or every 12,500 miles, whichever comes first. Main dealer or reputable independent stamps are best. Missing services are a red flag.
• Turbo boost test: On your test drive, accelerate hard in third gear from low revs. Feel for a strong pull. Listen for any rattling or whistling from the turbo.
• Diagnostic scan: Bring an OBD2 scanner or ask a garage to check for stored fault codes. Codes like P0299, P0234, or misfire codes should make you cautious.
• Infotainment and electrics: Test everything. Pair your phone, try the sat-nav, check all windows and mirrors, and make sure the air con blows cold.
• Oil consumption check: Ask the seller how much oil they add between services. More than 0.5 litres per 1,000 miles is a warning sign.
• Visual checks: Look for oil leaks around the turbo, intercooler pipes, and sump. Check coolant level and condition. Look for any signs of accident damage or poor repairs.
• Test drive: Go for at least 15 minutes, mixing town and faster roads. Check for hesitation, flat spots, smoke, and unusual noises.

What it’ll cost to fix common problems

The takeaway

The Nissan Juke 1.2 DIG-T can be a fun, frugal used car—but only if you buy a well-maintained example. The H5FT engine’s timing chain, turbo, and oil consumption issues are real, and they can be expensive to fix. Don’t be swayed by a shiny paint job and a low price. Prioritise a full service history, listen carefully on a cold start, and test the turbo thoroughly on your test drive. If you’re not confident in your own checks, pay for a pre-purchase inspection from a Juke specialist. It could save you hundreds, if not thousands.

When you’re ready to make that change, UpCars.uk is a good place to look—every car is checked over properly before it’s listed, so you can browse with a bit more confidence.