Mario-R Posted August 24, 2021 Share Posted August 24, 2021 (edited) Hi. I recently bought Alphard 3.0 V6 2003. On steady motorway driving 60-70mph max when revs are between 2500-3000rpm, fuel consumption is 20MPG (UK) I don’t think it’s normal? I’ve checked air filter and it’s like new (still white all around) I’ve plugged my diagnostics and o2 oxygen sensors showing I believe normal values between 0.1V - 0.8V. Car is rolling nicely, no brakes seized etc. The only thing I haven’t checked are spark plugs but engine is running very nice and smooth, good acceleration, no misfires etc, no smoke from exhaust even under hard acceleration, drives lovely, . Tyres on 35psi. Anyone know what else I could check to reduce fuel consumption? Happy to hear from you guys what’s your fuel consumption on motorway. Thanks Edited August 24, 2021 by Mario-R Quote Link to comment Share on other sites More sharing options...
wjvh Posted August 24, 2021 Share Posted August 24, 2021 Revs are too high. You driving in ‘D’ mode? Not D3? should Rev at about 1800 to 2000 and give you closer to 30mpg. Quote Link to comment Share on other sites More sharing options...
Mario-R Posted August 24, 2021 Author Share Posted August 24, 2021 (edited) 11 minutes ago, wjvh said: Revs are too high. You driving in ‘D’ mode? Not D3? should Rev at about 1800 to 2000 and give you closer to 30mpg. I was on “D” mode and it’s prefacelift 4 speed gearbox but fuel consumption it’s still too high in my opinion Edited August 24, 2021 by Mario-R Quote Link to comment Share on other sites More sharing options...
Rojie Posted August 24, 2021 Share Posted August 24, 2021 According to my handbook, it depends on which model you have. The M series is quoted as 8.9 lt per km, whereas The A series is quoted as 9.4 lt per km. These figures, I assume, are average consumption (in Japan, if that makes a difference, altitude, traffic density, etc). I have not had my M series long enough to suggest what mileage you should get. Quote Link to comment Share on other sites More sharing options...
Rojie Posted August 24, 2021 Share Posted August 24, 2021 Rereading this, it looks very wrong! But is lifted from the manual I have. I just checked the manual again. This IS what id says. Methinks it should be litres per 100km ! Sorry. Quote Link to comment Share on other sites More sharing options...
Mike Matts Posted August 26, 2021 Share Posted August 26, 2021 On 8/24/2021 at 1:16 PM, Mario-R said: Hi. I recently bought Alphard 3.0 V6 2003. On steady motorway driving 60-70mph max when revs are between 2500-3000rpm, fuel consumption is 20MPG (UK) I don’t think it’s normal? I’ve checked air filter and it’s like new (still white all around) I’ve plugged my diagnostics and o2 oxygen sensors showing I believe normal values between 0.1V - 0.8V. Car is rolling nicely, no brakes seized etc. The only thing I haven’t checked are spark plugs but engine is running very nice and smooth, good acceleration, no misfires etc, no smoke from exhaust even under hard acceleration, drives lovely, . Tyres on 35psi. Anyone know what else I could check to reduce fuel consumption? Happy to hear from you guys what’s your fuel consumption on motorway. Thanks On 8/24/2021 at 1:16 PM, Mario-R said: Hi. I recently bought Alphard 3.0 V6 2003. On steady motorway driving 60-70mph max when revs are between 2500-3000rpm, fuel consumption is 20MPG (UK) I don’t think it’s normal? I’ve checked air filter and it’s like new (still white all around) I’ve plugged my diagnostics and o2 oxygen sensors showing I believe normal values between 0.1V - 0.8V. Car is rolling nicely, no brakes seized etc. The only thing I haven’t checked are spark plugs but engine is running very nice and smooth, good acceleration, no misfires etc, no smoke from exhaust even under hard acceleration, drives lovely, . Tyres on 35psi. Anyone know what else I could check to reduce fuel consumption? Happy to hear from you guys what’s your fuel consumption on motorway. Thanks E Quote Link to comment Share on other sites More sharing options...
Mike Matts Posted August 26, 2021 Share Posted August 26, 2021 Hi mario i have a 20063lt v6 alphie with a 4speed auto box, at 60 mph my revs are 3100. At 70 they are 3200 this while driving in d4. The fuel consumption you state I would call reasonable I have had many 2.5 autos before and at best returned 25mpg. mike Quote Link to comment Share on other sites More sharing options...
wjvh Posted August 26, 2021 Share Posted August 26, 2021 5 hours ago, Mike Matts said: Hi mario i have a 20063lt v6 alphie with a 4speed auto box, at 60 mph my revs are 3100. At 70 they are 3200 this while driving in d4. The fuel consumption you state I would call reasonable I have had many 2.5 autos before and at best returned 25mpg. mike 2006 v6 should be 5 spd auto. If you drive in D mode then you will be using all 5 auto gears, if you drive in D4 mode then you will only be using gears 1 to 4, hence your high revs at 60 and 70mph and low fuel consumption. Suggest you use D mode. You should then Rev at about 2000 rpm at 60 to 70mph and your fuel economy will go up quite a bit too. Quote Link to comment Share on other sites More sharing options...
Mike Matts Posted August 27, 2021 Share Posted August 27, 2021 On 8/26/2021 at 8:13 AM, Mike Matts said: Hi mario i have a 20063lt v6 alphie with a 4speed auto box, at 60 mph my revs are 3100. At 70 they are 3200 this while driving in d4. The fuel consumption you state I would call reasonable I have had many 2.5 autos before and at best returned 25mpg. mike Hi mario i must correct myself as wish states drive in D not D4 see photos mike Quote Link to comment Share on other sites More sharing options...
Mike Matts Posted August 27, 2021 Share Posted August 27, 2021 On 8/26/2021 at 8:13 AM, Mike Matts said: Hi mario i have a 20063lt v6 alphie with a 4speed auto box, at 60 mph my revs are 3100. At 70 they are 3200 this while driving in d4. The fuel consumption you state I would call reasonable I have had many 2.5 autos before and at best returned 25mpg. mike Please ignor. This comment it is wrong I have been driving my alphie for months in 4th gear not D which is 5th thank to vjwh for his post and putting me right Mike On 8/26/2021 at 8:13 AM, Mike Matts said: Hi mario i have a 20063lt v6 alphie with a 4speed auto box, at 60 mph my revs are 3100. At 70 they are 3200 this while driving in d4. The fuel consumption you state I would call reasonable I have had many 2.5 autos before and at best returned 25mpg. mike Quote Link to comment Share on other sites More sharing options...
Gordio21 Posted September 11, 2021 Share Posted September 11, 2021 Yes I'd agree with Mike mines a 2003. 3000ltr and I reckon the same which is why I converted to LPG now I'm getting around 42/5. on both fuel and gas. Happy motoring.Gordi. Quote Link to comment Share on other sites More sharing options...
Ldrego Posted September 12, 2021 Share Posted September 12, 2021 https://youtu.be/oiqYjKZXQUk Quote Link to comment Share on other sites More sharing options...
Picasso Posted December 2, 2021 Share Posted December 2, 2021 I'm getting my 3.0 alphard converted to lpg next week been quoted £1395.00 I'm please with the quote Quote Link to comment Share on other sites More sharing options...
wjvh Posted December 3, 2021 Share Posted December 3, 2021 6 hours ago, Picasso said: I'm getting my 3.0 alphard converted to lpg next week been quoted £1395.00 I'm please with the quote That’s a good price. Can you Post details of the converter ? Quote Link to comment Share on other sites More sharing options...
Picasso Posted December 3, 2021 Share Posted December 3, 2021 Sure. https://www.lpgwales.com/ having a 64 ltr tank fitted in where spare wheel is drop it off Wednesday collect it Friday he is also fitting a valve saver system for free which he normally charges £79.00 for the owners name is pawel . 1 Quote Link to comment Share on other sites More sharing options...
Picasso Posted December 11, 2021 Share Posted December 11, 2021 Well I just picked my 3.0 alphard drove it all alway back from Wales on lpg no loss of power drives great 120 miles still had over half tank lpg left . Quote Link to comment Share on other sites More sharing options...
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