This is just one part of a whole range of measures and they are spreading the pain around:
As of January 1st 2019, SUV's (Sport utility vehicles), big sedans and other large cars will be slapped with penalties of between €50 to €10,500 depending on their polluting level, fines that in fact already exist.
The difference is that the emission threshold for cars will be lowered by 3 grams, from 120 to 117 grams of CO2 released per kilometer.
That means the number of cars penalized is likely to rise from the current 16.5 percent to 27.6 percent in 2019, unless there’s a considerable switchover to less polluting cars by the French public.
https://www.thelocal.fr/20180720/france-tightens-grip-on-polluting-cars-with-stricter-eco-taxI went to look what the actual tax is. Of course there are some other issues with the price as well:
Why have fuel prices increased in France?
The hike in fuel prices is due to three things (two of which were decided by the government), said Chassignet.
A rise in crude oil prices in 2018 is the first reason why fuel prices have been high this year. The cost surged to a bit more than €80 per barrel in October although it has since dropped to the low 50s, high 40s in November. With a weak euro in regards to the dollar, this increase has been strongly felt by motorists.
“The price of crude oil increased a lot from July to October this year, it only started going down this month,” said Chassignet.
The second thing is an increase in the carbon tax, which is meant to limit greenhouse gas emissions.
Introduced in 2014 under the Francois Hollande government, the carbon tax falls under the domestic consumption taxes (TIC) umbrella. The government has the objective to keep increasing this tax for the next few years (going from €39 in 2018 to €47,5 in 2019).
Since the beginning of this year, the diesel tax went up by 7.60 cents per litre, while the tax on petrol went up by 3.90 cents per litre
https://www.euronews.com/2018/11/16/what-s-all-the-fuss-about-the-french-fuel-tax-hikes-euronews-answersThe french government also put money aside for compensation so you can get a credit for changing to a less polluting car.
So they are not just putting the cost of walking away from FF squarely on the shoulders of the
poorest.