2.0. v 2.2 Hdi engines.

Discuss, ask, or get help with engine and mechanical queries in here.

Moderator: Moderators

PeterN
3.0 24v
Posts: 1397
Joined: Sun Mar 04, 2012 7:04 pm
Location: Charmouth, Dorset

2.0. v 2.2 Hdi engines.

Post by PeterN » Tue Jun 19, 2018 10:58 am

I went to Bristol in my sons 2.2 Hdi coupe yesterday, he was driving and drives a lot faster than I do in my 2.0. estate and yet when we reached the M5 his fuel consumption was showing over 60 mpg, once he got on the motorway and put his foot down it dropped to the mid to low 50s but that was at 70 mph.

I had a 2.2 C5 which would barely do 50 mpg at 60 mph on the motorway do I changed it for a 2.0. C5 and the consumption immediately jumped to 60+ so I have avoided the 2.2 like the plague ever since.

The first 406 estate I had was a 2.0. and would regularly well exceed 60 mpg on a decent journey and averaged between 50 and 60 on average. The two I have now will just about make 60 mpg on the motorway driven at 60 mph or less but round here in the winter drop to the mid 40s.

I have checked or changed most things on my current ones and nothing seems to help much, in a last ditch attempt to improve things I am going to fit the injectors from the now defunct 1st car and see if that gives an improvement.

I will mention that my normal long distance driving mode is in the n/s lane with the lorries at around 60 mph. I used to drive 2.1 ID XMs and got over 50 mpg from those driving to Scotland.

I would be interested in your experiences.

Peter

trufflehunt
3.0 24v
Posts: 500
Joined: Sat Aug 25, 2012 9:15 pm
Location: Axbridge, Somerset

Re: 2.0. v 2.2 Hdi engines.

Post by trufflehunt » Tue Jun 19, 2018 11:56 am

My HDI 110 gave around 49 in general running around. That was mostly 9 or 10 mile trips on windy country A roads, to nearest towns,
plus occasional 3 mile trips to local supermarket.

I didn't do much motorway driving in it. What I did do was always around 70mph, or more.
I think at 70, I was getting 55 'ish mpg.

You mention ".... round here in the winter drops to the mid 40s....".
If that includes quite a lot of short, or 5 or 6 mile runs, perhaps mid- 40's mpg is what might be expected. Plus, there is also the winter diesel fuel effect.

As a side reference, my current daily car, Golf Mk4 1.9 TDI 100bhp, does almost exactly 52 mpg running around, which matches
well with other people's experiences of that model. And on the motorway last week, at a steady 70, the computer showed just over 58mpg.

Overall, the mpg on the HDI 110 was well in line with what I wanted.

PS *** Sorry, no 2.2 experience.
Last edited by trufflehunt on Tue Jun 19, 2018 1:58 pm, edited 1 time in total.
2002 VW Golf 1.9 TDI (100 bhp)
1993 Mazda MX5 Mk1 1.6
2000 "W" HDI 110 Executive Saloon (Recycled).

User avatar
Doggy
Mod with a 2.2 HDi, De-Fapped!
Posts: 9983
Joined: Mon Oct 13, 2008 11:49 pm
Location: Northants

Re: 2.0. v 2.2 Hdi engines.

Post by Doggy » Tue Jun 19, 2018 1:01 pm

My driving is mostly main road / m-way which clearly helps, but.....

My first 2.2 HDi recorded 42/43 mpg and occasionally 45/6 in favourable conditions.
I did 80k+ miles in it, mostly after installing the '180' map.

Swapped to the current car in 2012, it was roughly 1 mpg better from day 1.
Losing the air doser, egr and installing the '200' map brought it up to 48/49 mpg, the 6-speed 'box I guestimate added another 1 mpg or so.
I regularly get 50 mpg ish in summer 46/7 in winter.

My bro had a similar 2.2 and got a couple of mpg less than me with less long runs, but nudging 50 mpg on trips to France.
He's currently running a 110 HDi and believes that if it is more economical, it's not enough to notice.
2003 HDi 2.2 6-speed Exec Estate

User avatar
GingerMagic
3.0 24v
Posts: 2994
Joined: Fri Apr 06, 2012 9:02 pm
Location: Bournemouth

Re: 2.0. v 2.2 Hdi engines.

Post by GingerMagic » Tue Jun 19, 2018 1:25 pm

My 2.2hdi was also tinkered with, and easily got 60mpg on a run, and averaged around 45mpg on a tank, which was mostly local journeys...
I don't understand why the 2.2hdi is better on fuel than the 2.0hdi in some cases, maybe it's the extra torque..?
The Coupe is lighter so is marginally quicker and more frugal than my old estate - as you have witnessed in your boys one.
1999 T4 family wagon
2002 Citroen Xsara Picasso Hdi90
2003 Hdi110 Executive estate
1998 406 V6 Coupe - Midlife crisis..!
PP2000 user, can help with faults / diagnostics in the Bournemouth area.

PeterN
3.0 24v
Posts: 1397
Joined: Sun Mar 04, 2012 7:04 pm
Location: Charmouth, Dorset

Re: 2.0. v 2.2 Hdi engines.

Post by PeterN » Wed Jun 20, 2018 10:18 am

Thanks for that. I collected my sons car from Telford and driving back here it averaged well over 60 mpg and went well, this was about what I was getting from my first 406 2.0. I'm impressed. I had a look on line for a 2.2 406 but there don't seem to be any, and if there were I would probably get one that only did 50 mpg. :(

Peter

trufflehunt
3.0 24v
Posts: 500
Joined: Sat Aug 25, 2012 9:15 pm
Location: Axbridge, Somerset

Re: 2.0. v 2.2 Hdi engines.

Post by trufflehunt » Wed Jun 20, 2018 11:18 am

PeterN wrote:
Wed Jun 20, 2018 10:18 am
Thanks for that. I collected my sons car from Telford and driving back here it averaged well over 60 mpg and went well, this was about what I was getting from my first 406 2.0. I'm impressed. I had a look on line for a 2.2 406 but there don't seem to be any, and if there were I would probably get one that only did 50 mpg. :(

Peter
https://www.ebay.co.uk/itm/peugeot-406- ... SwoT1a6LwD

Alternatively...

https://www.autotrader.co.uk/classified ... 500&page=2
2002 VW Golf 1.9 TDI (100 bhp)
1993 Mazda MX5 Mk1 1.6
2000 "W" HDI 110 Executive Saloon (Recycled).

PeterN
3.0 24v
Posts: 1397
Joined: Sun Mar 04, 2012 7:04 pm
Location: Charmouth, Dorset

Re: 2.0. v 2.2 Hdi engines.

Post by PeterN » Wed Jun 20, 2018 4:40 pm

Thanks but it would be an estate I'm looking for.

Peter

grasmere59
3.0 24v
Posts: 1396
Joined: Wed Jul 28, 2010 10:23 pm

Re: 2.0. v 2.2 Hdi engines.

Post by grasmere59 » Wed Jun 20, 2018 11:40 pm

My 110 estate only does long runs 100 miles or so on every outing mostly motorways 60-70 mph and the mfd shows 48.8 mpg over the last 2100 miles,never done a brim full test just going off the mfd
2003 "53" 110 hdi Executive Estate in Diablo Red,chesnut leather
2001 "51" BMW 530i sport auto in Black,sandstone leather
2012 "62" Yamaha XT1200 Super Tenere
1974 "M" Honda CB500/4
1994 "M" Kawasaki Zephyr 1100
2002 "02"Triumph Tiger 955i
1998 "S" Honda XRV 750 Africa Twin

PeterN
3.0 24v
Posts: 1397
Joined: Sun Mar 04, 2012 7:04 pm
Location: Charmouth, Dorset

Re: 2.0. v 2.2 Hdi engines.

Post by PeterN » Thu Jun 21, 2018 9:28 am

That's better than my C5 but not as good as my first 2.0. 406.

Peter

User avatar
Welly
The moderator formally known as Welton
Posts: 14567
Joined: Tue Jan 10, 2006 1:52 pm
Location: East Midlandfordshire

Re: 2.0. v 2.2 Hdi engines.

Post by Welly » Thu Jun 21, 2018 9:45 am

I've been on this forum many years and it appears to me that HDi's vary quite a lot with MPG's, some easily manage high numbers whilst others struggle. I only wish I could offer a solid reason for it.
Cars in my care:

2005 Volvo S40 T5 a bit pampered
2010 Citroen C4 1.6 HDi turbo de' explosions
2010 Renner Twingo refreshingly simple

PeterN
3.0 24v
Posts: 1397
Joined: Sun Mar 04, 2012 7:04 pm
Location: Charmouth, Dorset

Re: 2.0. v 2.2 Hdi engines.

Post by PeterN » Fri Jun 22, 2018 11:09 am

So do I. :(

Peter

User avatar
Doggy
Mod with a 2.2 HDi, De-Fapped!
Posts: 9983
Joined: Mon Oct 13, 2008 11:49 pm
Location: Northants

Re: 2.0. v 2.2 Hdi engines.

Post by Doggy » Fri Jun 22, 2018 11:02 pm

Just rocked up in Carlisle, en route to Glasgow for a mate's retirement do tomorrow nite.
So far 240 miles including half an hour of stop/start stuff around the A1/M18&M62 junctions, average 55 mph, 52.4 mpg.
Not too shabby, methinks. 8)
2003 HDi 2.2 6-speed Exec Estate

caprixpack
2.0 16v
Posts: 132
Joined: Sun Mar 11, 2018 5:00 pm
Location: Cumbria

Re: 2.0. v 2.2 Hdi engines.

Post by caprixpack » Sat Jun 23, 2018 6:56 am

Welly wrote:
Thu Jun 21, 2018 9:45 am
I've been on this forum many years and it appears to me that HDi's vary quite a lot with MPG's, some easily manage high numbers whilst others struggle. I only wish I could offer a solid reason for it.
I've noticed this on many forums. The passat forum I'm on is the same some cars will easily pull 50+ mpg and some struggle in the low 40s. Same with the 924, some will pull 35 mpg which for a car with the youngest being 33 years old is amazing while some struggle to pull mid 20s.

I think there are a lot of factors that contribute, tyres, driving style, if the car is well serviced.
1984 924 2.0 n/a crystal Green - The daily
2005 VW Passat tdi 130 Highline, now 170bhp & 290ft/lb
2000 Peugeot 406 2.0 hdi - stood for 4 years, fresh mot and mostly working.

PeterN
3.0 24v
Posts: 1397
Joined: Sun Mar 04, 2012 7:04 pm
Location: Charmouth, Dorset

Re: 2.0. v 2.2 Hdi engines.

Post by PeterN » Sat Jun 23, 2018 11:29 am

I think driving style is the primary factor but I always drive like a granddad, although I usually know where I'm going, my driving style hasn't changed for many years, about 60 mph and rarely above 2000 rpm and my brakes seem to last for ever, I only use them as a last resort. :wink:

Prior to having my 2.2 C5 I was getting around 55 mpg from my 2.1 XM estate on a longish journey and 60+ from the 406 but the C5 wouldn't top 50 mpg, although it drove beautifully, better than the 2.0. replacement 2.0. C5 but that was doing was around 60 mpg so it wasn't my driving style. I was quite amazed that I was getting that from my sons Coupe.

In the olden days a bigger diesel did give better fuel economy - as long as you didn't use the extra performance because before electronic management the throttle directly controlled the fuel input therefore the mixture, the weaker the mixture the better the economy. driving an old diesel flat out gave terrible consumption but the probably doesn't apply so much with modern engines although driving at high revs will knock the consumption, with most engines the further above 2000 rpm you go the less efficient is the engine.

Peter

User avatar
Doggy
Mod with a 2.2 HDi, De-Fapped!
Posts: 9983
Joined: Mon Oct 13, 2008 11:49 pm
Location: Northants

Re: 2.0. v 2.2 Hdi engines.

Post by Doggy » Sat Jun 23, 2018 5:36 pm

Technically, I always drive like a grandad too.
2003 HDi 2.2 6-speed Exec Estate

Post Reply