Stellantis 1.2 pure tech "hybrid", how hybrid are they?
Stellantis 1.2 pure tech "hybrid", how hybrid are they?
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BigsimonY

Original Poster:

634 posts

154 months

Monday 10th February 2025
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Within the Stellantis group there is a huge number of Citroën, Peugeot, DS & Vauxhall cars that come as MHEV with the 1.2 turbo hybrid systems. My question is about the well documented WET Belt issues. It's the supposed hybrid drive train. I'm told the car has a pathetically small battery and ev motor, so much so it can't even propel itself on pure electric? If so what's the point? Surely the whole point of a hybrid is to offer some sort of electric only range, even if that was only say 5 miles or so. It's motor is only 22hp. Hardly seems like it would offer anything meaningful even in the way of extra assistance or fuel economy. This sounds like a poor marketing strategy for the people who don't look into things and trust the car companies.

Krikkit

27,938 posts

210 months

Monday 10th February 2025
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BigsimonY said:
Surely the whole point of a hybrid is to offer some sort of electric only range, even if that was only say 5 miles or so. It's motor is only 22hp. Hardly seems like it would offer anything meaningful even in the way of extra assistance or fuel economy. This sounds like a poor marketing strategy for the people who don't look into things and trust the car companies.
The primary point of hybrid is to deploy and regenerate electrical power - 22hp is plenty for torque filling with a motor, and enough to cover most cruise speeds in a modern car.

Simon_GH

998 posts

109 months

Monday 10th February 2025
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It might be a mild hybrid. If so, the idea is a small shove to help midrange torque and save fuel. My mates Galaxy has a similar system, it can move the car at very low speeds but it just boosts the power of the internal combustion engine using energy recovered from braking.

Magnum 475

4,154 posts

161 months

Tuesday 11th February 2025
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To answer the question:

A mild hybrid uses a small motor to assist the petrol engine. This is usually a 48V unit often referred to as an Integrated Starter Generator. In most cases, this isn’t able to move the car by itself; it just acts as an assistant to the engine. This does boost both power & economy, and frequently helps remove lag to some extent.

If you want a car that will have proper electric range, you need either a self-charging hybrid - usually only low speed & short range on battery, or a plug-in hybrid - longer range & normal speeds on battery.


GeniusOfLove

5,763 posts

41 months

Tuesday 11th February 2025
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You only need about 3KW / 4bhp to hold a steady 30mph so that electric motor is well sized for city driving. A 22bhp electric assist could potentially make a huge difference to emissions/consumption round town if the battery is a useful size.

It's a cheap way of getting some of the benefits of hybridisation.

Edited by GeniusOfLove on Tuesday 11th February 12:54

marcusRR

259 posts

259 months

Tuesday 11th February 2025
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The 1.2 Stellantis mild hybrid uses a timing chain not a wet belt.

The hybrid element is designed to assist the petrol engine making the fuel economy and emissions better such as when accelerating away from traffic lights or low speed parking manoeuvres. In an urban driving environment Stellantis reckons a new 3008 with this engine can operate more than 50% of the time in 100% zero emission electric mode.

GeniusOfLove

5,763 posts

41 months

Tuesday 11th February 2025
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The 1.2 nasp 3 pot was an ok little engine up until the point it ingested bits of it's wet belt and died. With a chain and 20bhp of electric assist I think that'd be really quite nice in a 208.