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Find A Used BMW N20 Engine For Sale
You can find quality used N20 BMW engines for sale in any SA region with Engine Finder. From Monday through Friday between the hours of 8:00 and 17:00, our contact center representatives are waiting to answer your call. Alternatively, our online form for inquiries is open 24/7! After submitting your inquiry, all you have to do is wait for quotes from the neighborhood BMW scrap yards.
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N20B20 turbo four-cylinder engine production began in 2011 and was intended to replace the six-cylinder N53B25 and the N53B30 inline engines.
The aluminum cylinder block has two balancing shafts and steel-encased cylinders in the engine. Forged crankshafts with four offset counterbalances are also included. There are connecting rods that measure 144.35 mm in length. Additionally, the N20B20 comes with FM pistons that have the piston ring shifted negatively.
Additionally, N20B20 and N55 engines share a cylinder head that has a variable timing system called Valvetronic III in conjunction with the Double-VANOS system. TVDI, or Turbocharged Valvetronic Direct Injection, is also included in the N20B20 engine.
The Mitsubishi TD04LR6-04HR.15TK31-60T Twin-Scroll Turbo System for the N20 engine has a boosting pressure of 17 psi (1.15 bar).
The N20's intake manifold looks a lot like the N55's.
The Bosch MEVD17.2.4.system is used by the N20 engine.
Number of cylinders
Number of valves
4 per cylinder, 16 total
Maximum - 245 hp at 5000 rpm.
Maximum - 350 Nm at 1250-4800 rpm.
Up to 8 l/100 km in the garden
Up to 5.7 l/100 km on the highway
Required oil viscosity
Engine oil volume
Possible grease consumption
Up to 700 g/1000 km.
Oil change via
10,000 km, better - after 5-7.5 thousand km.
250+ thousand km.
+ 300 hp
Vehicles with BMW N20 engines
Given the success and popularity of the engine, it was actively used and installed on various BMW models:
The N20 engines use the Valvetronic system, with the help of which the Bavarian developers have reduced fuel consumption by 10%. Unlike conventional engines, the classic throttle valve is not used here to supply air to the cylinders. The air supply to the chambers is carried out using a variable intake duration. Instead of a throttle valve, a special intake valve with variable height is used. A similar mechanism turned out to be effective - it was called Valvetronic.
The N20B20 also uses a turbocharged twin-scroll system. Here the turbine is equipped with two volutes of different diameters. This allows you to consistently keep high torque at both high and low speeds. The engine becomes more responsive and comfortable to drive.
Next is the Doble-Vanos system, which involves changing the valve timing. The prefix Double indicates that the system affects two camshafts - on the intake and exhaust valves. The system also reduces fuel consumption and, consequently, the amount of harmful substances emitted into the atmosphere. At the same time, the engine idle becomes smoother, but most importantly, there is a noticeable increase in power at any speed, which is explained by the high accuracy of the system. That is, with an increase in speed, the valves open earlier than at idle, and when high speed is reached, with a delay.
However, there were drawbacks to such a system as well. The main one is dependability. Even though the technique is quite straightforward, o-rings eventually tan, play, and wear out. Although Doble-Vanos increases engine output and decreases fuel consumption, engines without it are more dependable since this node is not present.
BMW N20 Engine Problems
And although the N20 series of internal combustion engines is rightfully regarded as successful, they share several drawbacks with the N13 engines. The most typical:
Applying the traditional Stage 1 tuning chip is the simplest approach to boost power from 245 to 280 hp. The power may be raised to 300 hp if you flash it in Stage 2 and change the intercooler, exhaust, and cold intake.
It's important to note that tuning and modifications to the BMW N20B20 are not suggested since they will cause the engine to wear out sooner. Tuning and then reducing this amount is an unrealistic exercise given that the ICE data resource exceeds 250 horsepower. The BMW N20 is not one of BMW's great engines, which maintain their performance even after being tweaked.
Does it merit purchase?
The majority of mechanics agree that purchasing a BMW N20B20 before 2013 is a bad choice. There is a good chance that these motors will have an oil supply issue. If the vehicle has traveled more than 100,000 km, the motor has likely already undergone jamming and major overhaul. Since the oil supply issue is likely fixed on such internal combustion engines, it is preferable to use remanufactured BMW N20 engines till 2013, but their cost should also be reasonable.
After 2013, it is advised to buy vehicles based on the BMW N20B20. True, their resource may also be made available in four to five years, so there is a chance you might end up using a motor that is just now becoming "ill." How the prior owner utilized it will determine everything.