RX450 - MPG

[Megatron]

Hi

When I was comparing cars to buy, MPG was one of the factors. The dealer said official MPG of 53-54, and insisted that realistically I will get 48. 

Have had my RX450 Premier for over two months - best MPG I have been able to get is 31.6 and I have been driving it super smoothly.

Terrible!

 

[Silversalmon]

I've had my 2010 RX450h for 21 months, I've averaged 33.5 mpg in that period according to the computer. On a long run in Scotland I can get about 39 mpg, in the depths of winter it drops to 28 mpg, never lower. 

As 80% of my driving is urban I'm happy enough with those figures, but, what a porky from the dealers! 

 

[mrfunex]

2009 RX450h here. Mostly town driving..

 

 

[Glover]

Mine is give or take about the same although my pattern of driving is slightly different with approx. 50% urban, 40% A and B roads and 10% dual carriageway/motorway (very crude back of a fag packet calculation!).  I'd expect the latest generation of RX to better those figures but maybe it's just a question of it bedding in and if this is your first hybrid getting used to a different style of driving.

[Glover]

Sorry Stuart's post came through as I was typing; mine is the same as Mike's

[steveledzep]

Here are my actual results with a 2013 RX450h Luxury.  My local driving is back and to work on rural 30mph and 50mph roads.

DATE	LITRES	LOCATION	JOURNEY	MILEAGE	MILES/TANK	MODE	MPG TANK	COST	PPM TANK
04/03/17	Fill	Gorslas		55,542	-		-
22/03/17	44.46	Gorslas	Local	55,840	298	Normal	30.47	£52.42	£0.18
11/04/17	41.83	Gorslas	Local	56,116	276	Normal	30.00	£49.73	£0.18
02/05/17	40.38	Gorslas	Local	56,380	264	Normal	29.72	£48.02	£0.18
23/05/17	43.96	Gorslas	Local	56,684	304	Normal	31.44	£51.38	£0.17
08/06/17	51.51	Gorslas	Local	57,057	373	Normal	32.92	£60.21	£0.16
15/06/17	49.21	Penrith	Home, Chester, Blackpool, Kendal	57,449	392	Normal	36.21	£57.53	£0.15
18/06/17	48.33	Seaham	Glasgow, Stirling, Edinburgh, Ashington	57,826	377	Normal	35.46	£58.58	£0.16
20/06/17	50.51	Gorslas	York, Leamington Spa, Home	58,248	422	Normal	37.98	£58.54	£0.14
02/07/17	47.16	Southam	Local & Leamington	58,598	350	Normal	33.74	£52.77	£0.15
13/07/17	43.12	Gorslas	Leamington & Local	58,908	310	Normal	32.68	£49.54	£0.16
28/07/17	44.66	Gorslas	Local	59,218	310	Normal	31.56	£51.76	£0.17
16/08/17	44.36	Gorslas	Local	59,530	312	Normal	31.97	£52.30	£0.17
08/09/17	49.52	Gorslas	Local	59,885	355	Normal	32.59	£59.37	£0.17
02/10/17	44.21	Gorslas	Local	60,184	299	Normal	30.75	£52.56	£0.18
17/10/17	47.38	Gorslas	Local & Morriston	60,509	325	Normal	31.18	£55.38	£0.17
04/11/17	46.63	Gorslas	Local	60,814	305	Normal	29.73	£55.44	£0.18
22/11/17	52.02	Gorslas	Local	61,157	343	Normal	29.97	£63.93	£0.19
12/12/17	48.44	Gorslas	Local	61,456	299	Normal	28.06	£58.08	£0.19
04/01/18	50.75	Gorslas	Local	61,761	305	Normal	27.32	£61.86	£0.20
16/01/18	43.90	Morrisons	Local	62,041	280	Normal	28.99	£51.67	£0.18
26/01/18	40.40	Gorslas	Local	62,303	262	Normal	29.48	£49.25	£0.19
29/01/18	53.34	Gorslas	Leamington & Return	62,671	368	Normal	31.36	£65.03	£0.18
09/02/18	41.96	Gorslas	Local	62,938	267	Normal	28.93	£51.15	£0.19
17/02/18	52.36	Coop	Local	63,293	355	Normal	30.82	£63.83	£0.18
28/02/18	47.92	Asda	Local	63,583	290	Normal	27.51	£55.92	£0.19
12/03/18	48.90	Gorslas	Local & Mwyndy & Pontypridd	63,912	329	Normal	30.59	£58.64	£0.18
14/03/18	42.85	Chester	Pontypridd & Chester	64,239	327	Normal	34.69	£52.66	£0.16
23/03/18	50.38	Gorslas	Chester & Local	64,601	362	Normal	32.66	£60.41	£0.17
07/04/18	48.16	Gorslas	Local	64,929	328	Normal	30.96	£58.23	£0.18
20/04/18	46.53	Gorslas	Local	65,265	336	Normal	32.83	£57.19	£0.17
05/05/18	46.43	Gorslas	Local	65,604	339	Normal	33.19	£57.99	£0.17
01/06/18	49.10	Gorslas	Local	65,973	369	Normal	34.16	£63.78	£0.17
30/06/18	41.70	Gorslas	Local	66,263	290	Normal	31.61	£54.17	£0.19

 

[Guest]

Same here can get high thirties on a Devon or cornwall run but mostly hover around 30-34 on daily runs which i'm happy with considering the size of the car.

[steveledzep]

I'm happy too.  Would be early 20s mpg if not a hybrid.  It's a huge, heavy car.  Don't know where the official mpg figures came from.....must have had lots of fairy dust on the accelerator.

[rayaans]

Mine is currently on about 26.7mpg. Blame the heavy foot and town driving.

On the motorway, I get about 32-33mpg but I dont hang around.

I have driven sedately on a few occasions - a steady 60mph cruise on A roads and I have managed to get around 38-40mpg but it required a bit of patience and a lot of planning.

[C Mclean]

I’m getting around 38mpg in mostly urban and a few dual carriageways during the first 1000 miles. Quite happy with that as it’s the same as what my NX was doing.

[olliesgrandad]

I've covered 5000 miles since late June and checking tankful to tankful have averaged over 34mpg. Mixed motorway,urban and cross country driving

[Djwbiker]

HonestJohn  says for a 450h (2009-2015) official mpg 44.8 - 51.4  and real mpg 33.

 

 

[steveledzep]

Just now, Djwbiker said:

HonestJohn  says for a 450h (2009-2015) official mpg 44.8 - 51.4  and real mpg 33.

 

 

That tallies with my figures.  What I was expecting as I did my research before purchase.  I think it's very impressive from such a large, petrol driven vehicle.

[DanD]

Never managed better than 29mpg in our previous 450h... But I have a heavy foot I would rather enjoy the car then strive for economy.

Sent from my LG-H930 using Tapatalk

[Beejay]

My 155000+ mile 2005  Rx400h does around 31/32 but long trips with M/way 50 speed limits sees it get to 35 - eyeing a 450h 2014 Premier for low price and will take note of previous posts.😊

[stringbender]

I've had my Premier for 3 months now and I'm hoping that the computer is more accurate than the one on my old 05 ! My old car had always done about 23 mpg but then it dropped to just over 21 mpg. These figures came from over 5,000 miles so were fairly accurate. I would have been happy with 30 mpg on the Premier and am amazed that it's reading 37 mpg. Even if the real figure ( after more tanks full ) drops to 35 then that's a whole lot better than 21 !

You should never have been told that it could return 48 mpg and I'd want to speak to them about that. 

I wish I could get more distance whilst on the EV mode as it drops out very quickly on mine.

Alan

[rayaans]

10 hours ago, stringbender said:

I've had my Premier for 3 months now and I'm hoping that the computer is more accurate than the one on my old 05 ! My old car had always done about 23 mpg but then it dropped to just over 21 mpg. These figures came from over 5,000 miles so were fairly accurate. I would have been happy with 30 mpg on the Premier and am amazed that it's reading 37 mpg. Even if the real figure ( after more tanks full ) drops to 35 then that's a whole lot better than 21 !

You should never have been told that it could return 48 mpg and I'd want to speak to them about that. 

I wish I could get more distance whilst on the EV mode as it drops out very quickly on mine.

Alan

They're fully entitled to say it may return 48mpg as unfortunately the figure is around 54mpg. 

I should add that this is quite possible providing you are really delicate with your right foot.

[Rutlandlex]

I thought the 450's were supposed to be better than the 400's.

[flookyk]

I usually get an average of around 30mpg with a mixture of roads but I like driving it not toodling around.

On a long journey I have got that up to around 34mpg on average when on holidays.

On monday, after filling up, I decided to see what I could get on the journey to work and got an average of 44mpg following a lorry all the way up the motorway to work (around 17 miles) but it was boring as hell doing that .. average back to around 30mpg now.

[rayaans]

18 hours ago, Rutlandlex said:

I thought the 450's were supposed to be better than the 400's.

They are

Realistically, 400hs can't get anywhere near even 25mpg most of the time. 

And considering these new ones weigh nearly 300-400kg more

[Mr Vlad]

I had a drive from where I live in Rochdale to Bury on the A roads. I stuck to the speed limits but got their damn quick lol. It's all up and down hill and lots of bends. When I got home I looked at the display and blow me it read 42.2mpg. That is superb considering its a 3.5 litre V6 petrol. On motorway to Leeds sticking to the limit I get a nats over 40mpg but if I travel at let's say 80mph for example  (cough cough) I get middle 30's. Damn good cars.

[m4rkw]

Ya'll aren't doing too bad. I got a Harrier because the dealer said the small engine was more economical. Averaging about 19-20mpg but I drive fast.

[ColinBarber]

13 hours ago, m4rkw said:

Ya'll aren't doing too bad. I got a Harrier because the dealer said the small engine was more economical. Averaging about 19-20mpg but I drive fast.

They lied. The hybrids are more economical than standard models, even with the smaller engine.

450h is definitely better than the 400h - you should see 3 mpg or more. What that figure is depends on your driving style and type of roads you drive on, but given the same conditions the 450h should be better.

I'd normally get around 33 mpg from my 400h around town and drop to 28 on runs. 450h courtesy cars I've had were always better than that.

[m4rkw]

On 9/15/2018 at 12:16 PM, ColinBarber said:

They lied. The hybrids are more economical than standard models, even with the smaller engine.

450h is definitely better than the 400h - you should see 3 mpg or more. What that figure is depends on your driving style and type of roads you drive on, but given the same conditions the 450h should be better.

I'd normally get around 33 mpg from my 400h around town and drop to 28 on runs. 450h courtesy cars I've had were always better than that.

Indeed they did, but hey I'll take a few less mpg if I don't have to ever replace a hybrid Battery pack :P

[Rutlandlex]

17 hours ago, m4rkw said:

Indeed they did, but hey I'll take a few less mpg if I don't have to ever replace a hybrid battery pack 😛

The auto transmission in the 300 has a higher failure rate than hybrid Battery packs and they cost more to repair too.  I know we're talking single figure percentage failure rates for both but still.....