About this model
The Alfa Romeo 159 (type 939) was built from 2005 to 2011 as a saloon and Sportwagon estate. In BiH the 159 is one of the most common Italian saloons from that era - olx.ba has dozens of them listed at any moment, most often in the 1.9 JTDM version with 120 or 150 hp. Giorgetto Giugiaro's design earned it an army of loyal drivers, but build quality and maintenance complexity mean this isn't a car for an owner who picks the cheapest workshop. Most examples we see in Banja Luka have between 250,000 and 400,000 km, which means all the typical engine and suspension ailments have already shown up at least once.
Engines and variants
In BiH this model is most commonly available with the following engines.
1.9 JTDM 120 hp (939A2000) - the basic 8-valve diesel with a Bosch common-rail system, the most widespread variant in BiH. It's the most reliable of the JTDM family because the 8V head has fewer things that can break, but the DPF and EGR give it the same headaches as the 16V version. Parts are affordable, fuel use sits around 6-7 l/100 km on the open road, which makes it a logical pick for a driver who wants economy without too many complications.
1.9 JTDM 150 hp (939A2000) - the 16-valve version of the same engine with a variable-geometry turbo. More power means more load on the dual-mass flywheel and turbo, so turbo and DMF faults show up earlier than on the 120 hp version. A good choice for someone who often hits the motorway and wants a bit more punch, but budget for slightly pricier upkeep than the base version.
2.4 JTDM 200/210 hp (939A3000) - the five-cylinder 2.4 diesel, king of the range, but rare in BiH because of running costs and fuel use. The famous five-pot has excellent torque, but it can throw injector trouble and costs nearly twice as much to service - only go for it if you really know what you want and have the budget for Italian-grade maintenance.
1.8 MPI / 2.2 JTS petrol - the petrol versions, the naturally aspirated 1.8 MPI (140 hp) and the 2.2 JTS direct-injection (185 hp). Petrols are rarer in BiH - the 1.8 MPI is healthy and simple but underpowered for the heavy 159; the 2.2 JTS can cause trouble with injection and the high-pressure pump.
Reliability and reputation in the BiH market
The Alfa 159 is not a car for someone expecting Toyota-grade reliability. It's an Italian saloon with complex mechanicals, plenty of electronics and that Italian attitude toward small details that "just have to work". On BiH roads examples with 250-350 thousand km are the norm, which means the characteristic weaknesses have already had their turn - and if the car survived with proper services, it can keep going for a long time. The trick is finding such an example. Many 159s on the market are being sold precisely because the owner refused to pay for the timing belt, DPF or a new turbo. Spare parts are available - original ones via Magneti Marelli and Italian channels are pricey, but quality aftermarket parts (Lemförder, TRW, Bosch) cover about 80 percent of needs without shortening the lifespan. 159 owners are usually in love with the looks and the drive, which means when a 159 is being sold, it's often out of frustration with the electronics or the cost of an EGR/DPF repair - a good sign to open negotiations and not accept the first asking price.
Common faults we see
From day-to-day work, here's what most often comes in for repair on this model.
1. Timing belt and tensioner
Symptom: Chirping or squeal from the front of the engine on a cold start, rough running, in the worst case skipped teeth and bent valves.
The 1.9 JTDM (939A2000) is an interference engine - a snapped belt means a full rebuild. The Fiat/Alfa-prescribed 120,000 km interval is too long for BiH roads with our diesel and short trips. The tensioner and idler pulley often fail before the belt itself, so you can't rely on mileage alone.
Advice: Change the complete kit (belt, tensioner, two pulleys, water pump) by 90,000-100,000 km at the latest, or every 5 years - whichever comes first. Never just the belt.
2. DPF filter and regeneration
Symptom: Yellow DPF light, limp mode, higher fuel use, oil rising above MAX on the dipstick, smell of diesel in the engine bay.
The Bosch DPF on the 1.9 JTDM clogs quickly if the car is driven mostly in town or on short trips, which is the typical profile of this car in BiH. Failed regenerations dump fuel into the oil and change its specification. Owners who don't understand the warning light keep driving and pump the oil 1-2 cm above MAX, which leads to far worse consequences.
Advice: If you mostly drive in town, plan a 20-minute motorway run every 500 km to let a forced regeneration complete. Don't top up the oil before checking whether the level is genuine or diluted with diesel.
3. EGR valve and cooler
Symptom: Loss of power, hesitation under acceleration, black smoke, P0401 or P0403 fault code, sometimes an engine light with no obvious symptom.
The EGR on the 1.9 JTDM gums up with carbon by around 100,000-130,000 km, especially on a car used in town. The EGR cooler can leak coolant into the intake manifold - the engine then loses coolant with no visible leak, which often confuses both the owner and an unprepared mechanic for a long time.
Advice: The EGR can be cleaned and refitted, but it rarely survives a second round - the second time go for a new or a known-good used unit. Don't listen to advice about disabling the EGR in software - on the 1.9 JTDM that wrecks engine running and causes trouble at the technical inspection.
4. Turbocharger (Garrett GT1749V)
Symptom: Blue or white smoke under acceleration, a whistle that rises with throttle, loss of power above 2500 rpm, oil in the intercooler or hoses.
The turbo's variable geometry sticks with carbon the same as the EGR - the result is the same limp-mode faults. When the turbo starts leaking oil, it quickly spreads the problem to the intercooler and DPF, because oil clogs the DPF at express tempo and turns one fault into three.
Advice: At the first symptoms, clean the turbo geometry before it fails. When the turbo is replaced, always wash the intercooler and check the DPF, otherwise the new turbo will end up the same way in a few thousand km.
5. Common-rail pump and injectors (Bosch CP1)
Symptom: Hard hot start, uneven idle, fuel return above the spec values, P0087 fault (low rail pressure).
The Bosch CP1 pump and injectors are sensitive to diesel quality, and in BiH people still fill up with whatever's around. Over time the pump produces metal swarf that destroys the injectors, so the whole system has to be replaced - a serious job measured in thousands of marks.
Advice: Fill up at trusted stations, change the fuel filter strictly every 30,000 km (not 60,000 as some workshops claim), and don't wait for an injector to fail completely before replacing it.
6. Dual-mass flywheel and clutch
Symptom: Knocking and rattling at idle that disappears when the clutch is pressed, vibrations at start-up and shutdown, judder when pulling away.
The 1.9 JTDM has a strong 305 Nm of torque that chews through dual-mass flywheels - average life is 150,000-200,000 km, shorter if it's often driven at low rpm or used to tow. The clutch and DMF are almost always replaced together, since pulling the gearbox once is enough.
Advice: Don't lug the engine below 1500 rpm in higher gears - that kills the DMF faster than anything. When buying, always check for rattle at idle with the clutch pressed and released.
7. Front suspension (upper arms and bushings)
Symptom: Knocking over bumps, imprecise steering, uneven front tyre wear, wheel vibration at 80-100 km/h.
The Alfa 159 has a complex multi-link front suspension with plenty of bushings and rubbers that wear faster than on a standard MacPherson setup, especially on our pothole-ridden streets. The upper arm (upper link) is typically first to go, in the 80,000-120,000 km range depending on driving conditions.
Advice: Original parts are expensive - quality TRW, Lemförder or Moog do the job and last realistically. Avoid the cheapest Chinese bushings, they last 6 months.
8. Electronics and Body Computer
Symptom: Random dashboard lights, central locking problems, a window or light not working for no reason, the battery flat overnight.
The Alfa 159 has a Body Computer (BCM) that's the hub of the entire electrical network - when there's a micro-break or corrosion in a connector, "ghosts" appear. Moisture in the boot (a bad seal) often kills the module behind the rear bumper, and that's one of the first places to look.
Advice: Before replacing expensive modules, have someone with a proper Multiecuscan or AlfaDiag tool read the BCM and all modules - the problem is often green corrosion in a single connector.
9. Oil leaks from camshaft seal and valve cover
Symptom: Smell of burnt oil, oil on the back of the engine, dripping onto the exhaust manifold (which can smoke).
The valve cover and camshaft seal on the 1.9 JTDM start to weep around 150,000 km - not a disaster, but if ignored, oil reaches the alternator belt and eats it, so what could have been a cheap seal change becomes a pricier repair.
Service and maintenance
Change the timing belt with all pulleys, tensioner and water pump in the 90,000-100,000 km range or every 5 years, depending on driving conditions (shorter in town and on short trips, longer for open-road use) - don't stick to Fiat's original 120k interval. The oil must meet Fiat 9.55535-S2 spec (or Selenia Multipower as a must for the JTDM), and the change interval is 10,000 km, not 20,000 as some workshops claim, because the DPF dilutes the oil with diesel. Fuel filter every 30,000 km, oil filter with every oil change. If the car has a DPF, plan for cleaning or burn-off in the 180,000-220,000 km zone, depending on driving style. Air-con disinfection once a year - the 159 has a tendency to grow mould in the cabin because of the ventilation design.
Which oil for the Alfa 159 1.9 JTDM
For the 1.9 JTDM use only oil meeting Fiat 9.55535-S2 spec, which in practice means Selenia Multipower 5W-40 or an equivalent oil carrying that designation (Eni, Petronas, Liqui Moly all have versions). Generic 5W-40 with an ACEA C3 rating is NOT the same - the JTDM engine with the Bosch system requires this exact spec because of the additives that protect the injectors and common-rail pump. Change at 10,000 km, no more, because DPF regenerations inject diesel into the oil and change its viscosity. If you see someone offering a "longlife" interval of 20-30k km, feel free to skip that workshop.
Owner tips
- Before buying a specific example: use the VIN to pull the full history of the car via carVertical. The report typically shows real odometer readings by date, recorded accidents, the number of previous owners, and theft or total-loss indicators. We consider it mandatory before buying any used 159, because a good share of examples came in from Italy and Germany where the history is often richer than what's in our service book. When paying for the report you can use the code GAGA and get a 20% discount.
- Fill up at trusted stations - the Bosch CP1 system on the 1.9 JTDM doesn't forgive bad diesel.
- Use only Selenia Multipower (or a Fiat 9.55535-S2 equivalent) oil, and change it every 10,000 km without exception.
- Every 500 km of city driving, do a 20-minute motorway run to let a DPF regeneration finish.
- When inflating the tyres stick to the manufacturer's spec - the 159 is a heavy car and low pressure eats the front tyres in 20,000 km.
- Investing in a quality diagnostic tool (Multiecuscan or AlfaDiag) pays for itself the first time you read which light is on yourself and avoid a wrong-part replacement at some generic OBD2 shop.
Frequently asked questions
Is the Alfa 159 1.9 JTDM reliable for daily driving?
It's reliable if it's serviced regularly and driven by the rules - meaning the belt interval, good oil, not predominantly city use. As a car for a 20 km commute to work and back every day in the city, it'll clog the DPF and create EGR problems fast. For mixed driving and a careful owner it's perfectly reliable.
How many kilometres can an Alfa 159 1.9 JTDM cover?
In our shop we regularly see examples with 350,000-400,000 km still on the road. The engine itself is robust - usually the DMF, turbo and DPF go before it does. If you're willing to invest in those parts, the engine easily passes 500,000 km.
Which is the best engine choice in the Alfa 159?
For BiH conditions and reasonable running costs we recommend the 1.9 JTDM 120 hp - powerful enough, the most affordable parts, fewer things that can break. The 1.9 JTDM 150 hp is also a good pick if you want quicker acceleration. The 2.4 JTDM is a driver's delight but expensive to maintain. Avoid the petrols unless you have to.
Is it worth fitting LPG to a 1.9 JTDM?
No - the 1.9 JTDM is a diesel engine and LPG isn't fitted to diesels in the classic way. If you're after fuel savings, a better option is a healthy DPF and a clean EGR that bring fuel use back to normal (around 6-7 l/100 km on the open road).
What should I check when buying a used Alfa 159 1.9 JTDM?
Always check when the timing belt was done (if there's no proof, factor it into the price right away), whether the car has a DPF and whether any warning light is on, whether the engine has a rattle at idle (DMF), the oil level on the dipstick and whether it smells of diesel. An inspection on a lift for the state of the EGR, seals and suspension saves you thousands of KM later.
Can I clean the DPF on a 159 myself, or do I have to go to a shop?
There are maintenance additives, but real DPF cleaning is done with specialist machines and removal - that's not a garage job. The best prevention is to take the car out every few weeks for at least 30 minutes on the motorway with the engine above 2500 rpm, so the DPF can regenerate itself.
If you notice any of these symptoms on your 159, drop by the workshop - it's better to check early than to repair expensively.