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Kia Sportage: Theta II 2.4 GDI / Nu 2.0 MPI Excessive Engine Oil Consumption

Theta II 2.4 GDI / Nu 2.0 MPI Excessive Engine Oil Consumption is a common engine fault on the Kia Sportage on the 2015–2020 cars, and we rate it major. Putting it right costs $4,000 to $9,500 at New Zealand independent workshop rates. Below is what goes wrong, the symptoms to notice on a test drive, where to look, and what to ask the seller before you hand over any money. It is one of 28 documented faults on the Kia Sportage.

Vehicle
Kia Sportage
Engine
2.4L / 2.0L
Years
2015–2020
Fuel
petrol
System
Engine

This page covers the Kia Sportage as a model. Some faults only affect particular engines or build years — enter a plate below to narrow the list to one car.

All Kia Sportage faults28 documented faults on this model

What you are looking at

No photograph available

We do not hold a verified photograph for this fault yet. We would rather show none than show a picture of something else.

What goes wrong

A documented pattern of excessive oil consumption—sometimes over one litre per 1,000 km—affects both the Theta II 2.4 and Nu 2.0 petrol engines due to piston ring wear, ring-land coking, and insufficient ring tension from the factory. Kia extended powertrain warranties in some markets and issued a consumption test procedure (KTB-ENG-016). Owners who do not monitor oil levels risk running low enough to trigger bearing damage, creating overlap with the connecting rod failure fault.

What you would notice

  • Oil level drops noticeably between 3,000–5,000 km oil change intervals
  • Faint blue smoke from exhaust on overrun or after extended idle
  • Oily, sooty residue around the exhaust tip
  • Occasional oil-related check engine light or low-oil-pressure warning
  • Spark plugs fouled with oil deposits on inspection

How to check it

Where to look. Engine internal — piston rings and ring lands, cylinder bore

  1. Pull the oil dipstick and note the level.

  2. Ask when oil was last topped up and how frequently the owner adds oil between services.

  3. Check for blue smoke from the exhaust on cold start or under deceleration.

  4. Review oil service intervals—if the car is serviced at 10,000 km intervals but the owner adds oil in between, that confirms consumption.

  5. Request a Kia consumption test result if available.

What it costs to put right

$4,000 to $9,500 at New Zealand independent workshop rates. That is for this job on its own, not for the car.

An estimate, in NZD, for the repair as normally carried out. What a specific car costs depends on which part has failed and what it damaged on the way — treat this as the floor for a negotiation, not a quote.

Ask the seller

  • “Do you need to add oil between scheduled services, and if so how much?”
  • “Has a Kia dealer performed an oil consumption test and what was the result?”
  • “Has the engine ever had piston ring work or an internal engine repair?”

Now check the Kia Sportage you are actually looking at

Everything above is true of the model, and it is free. What it does not tell you is whether THIS car has been looked after: its odometer history and whether the reading has ever gone backwards, whether there is still money owing on it, whether it has been reported stolen, how many owners it has had and what it is really worth today. That comes from the official records for that plate. Enter the plate for the free details, or get the full history and a market valuation from $13.49.

Not sure what you would be paying for? See what a full KickTyres check includes.

Where this comes from

The failure described above is documented in published sources — owner forums, technical service bulletins, recall notices and workshop write-ups — held in our fault database. The inspection instructions and the cost estimate are KickTyres’ own interpretation of them, and it is a starting point for an inspection rather than a manufacturer statement.

Kia Sportage buyer questions

Is theta ii 2.4 gdi / nu 2.0 mpi excessive engine oil consumption serious on a Kia Sportage?

We rate it major and common on the Kia Sportage. A documented pattern of excessive oil consumption—sometimes over one litre per 1,000 km—affects both the Theta II 2.4 and Nu 2.0 petrol engines due to piston ring wear, ring-land coking, and insufficient ring tension from the factory. Kia extended powertrain warranties in some markets and issued a consumption test procedure (KTB-ENG-016). Owners who do not monitor oil levels risk running low enough to trigger bearing damage, creating overlap with the connecting rod failure fault.

How much does it cost to fix on a Kia Sportage?

$4,000 to $9,500 at New Zealand independent workshop rates. That figure is for this job on its own. A car showing the symptoms on this page is usually worth either walking away from or negotiating down by at least the repair figure.

Which Kia Sportage years are affected?

Our research records this fault on the 2015–2020 Kia Sportage. Build dates move around, especially on imported cars, so treat the range as the years to look hardest at rather than a guarantee either way. The official records tell you the exact build and first registration date for the car in front of you.

How do I check for it before I buy?

Pull the oil dipstick and note the level. Ask when oil was last topped up and how frequently the owner adds oil between services. Check for blue smoke from the exhaust on cold start or under deceleration. Review oil service intervals—if the car is serviced at 10,000 km intervals but the owner adds oil in between, that confirms consumption. Request a Kia consumption test result if available. Look here: Engine internal — piston rings and ring lands, cylinder bore