Lexus models with the 2.5 hybrid engine

[Slucky]

Anyone looking to know the difference between all Lexus models that have the 2.5 Litre engine, below is official figures.

Included the UX 250H in the list, even though its a 2.0 litre, I think its holds its own ground among the 2.5 litre engines, plus it has a better hybrid system.

 

	IS 300H	UX 250H	NX 300H	ES 300H	GS 300H	RC 300H
Engine	4 cylinders in-line	4 cylinders in-line	4 cylinders in-line	4 cylinders in-line	4 cylinders in-line	4 cylinders in-line
Displacement (cc)	2,494	1,987	2,494	2,487	2,494	2,494
Total system output bhp (engine + battery/)	220	176	195	215	220	220
Max. engine power (bhp @ rpm)	178 @ 6,000	107 @ 6,000	153 @ 5,700	176 @ 5,700	178 @ 6,000	178 @ 6,000
Max. engine torque (Nm @ rpm)	221 @ 4,200 – 5,400	180 @4,400	210 @ 4,200 - 4,400	221 @ 3,600 – 5,200	221 @ 4,200 – 5,400	221 @ 4,200 – 5,400
Gross Weight (kg)	2,130	2,110	2,245 - 2,395	2,150	1,730 – 1,830	2,170

 

 

 

[ColinBarber]

The IS, GS and RC have the same engine, and the NX engine is similar but lacks direct injection which is the main reason its power is down.

Both the UX and ES use a newer generation of Toyota Dynamic Force engine which are more efficient and next generation hybrid systems.

[westo3]

I would have thought the GS would be heavier then the IS?

[Spacewagon52]

17 minutes ago, westo3 said:

I would have thought the GS would be heavier then the IS?

That surprised me too!

[Slucky]

From my understanding the GS was built with lighter aluminium components across its platform, which would reduce the weight.

Do notice the weight on my IS 300H, and sometimes hear the engine having to work hard to get to a decent speed on the motorway.

 

[ColinBarber]

1 hour ago, Slucky said:

From my understanding the GS was built with lighter aluminium components across its platform, which would reduce the weight.

Do notice the weight on my IS 300H, and sometimes hear the engine having to work hard to get to a decent speed on the motorway.

 

The IS is lighter, although not that much. The GS figure you have is wrong because that is the kerb weight, the gross is 2,265 Kg.

[steve2006]

One thing I have never really understood is the max BHP and RPM, do these figures mean to actually get the maximum power available you have to red line the engine every time?

[Slucky]

15 minutes ago, ColinBarber said:

The IS is lighter, although not that much. The GS figure you have is wrong because that is the kerb weight, the gross is 2,265 Kg.

My bad, yes that is correct 2,235 – 2,265 kg depending on model

[ColinBarber]

3 hours ago, steve2006 said:

One thing I have never really understood is the max BHP and RPM, do these figures mean to actually get the maximum power available you have to red line the engine every time?

In a word, yes.

BHP produced is different according to engine speed.

The following from a modern F engine for example shows a peak around 7k rpm. You rev just beyond that before changing gear so that you don't drop too far back.

The beauty of the CVT on a hybrid is that it can hold the engine at the peak power rpm so you continuously have maximum power. Most of the time however you don't need all the power the engine can provide so you can just sit at a lower rpm. Put your foot to the floor in an IS300h and it will hold the rpm at 6,000 rpm which is the peak power point for that engine.

[Spacewagon52]

I am correct in assuming the 2021 NX will have the same 2.5 engine (new Toyota Dymanic Force) as the ES?

[Spacewagon52]

Correction: Am I correct? Not I am correct? As I do not know!

[ColinBarber]

3 hours ago, Spacewagon52 said:

I am correct in assuming the 2021 NX will have the same 2.5 engine (new Toyota Dymanic Force) as the ES?

Yes (although it will be the 2022 NX). It will use the A25A-FXS engine which is currently in the ES300h and the current RAV4. It appears the hybrid system is going to be tweaked slightly though to get it more power - which is probably the reason it will be the NX350h rather than NX300h.

The NX450h will also use the same engine.