What is the e-C4 Refrigerant Capacity?

[JT99]

I am minded to get the refrigerant topped up at my MOT in September, but the system capacity isn't on the label, only that it is R1234yf.

R1234yf lasts around 3 years before too much escapes in a conventional car with an engine driven compressor, I'd hope that it would stay in an electric system a bit longer, but it won't hurt to get it filled to the max as the heat pump is vital and runs all the time, Summer & Winter.

The independent technician will obviously look it up in his database, but I'd like to know the official figure in case the third party data is for one without a heatpump or something.

Car is a late 2021 MK2 e-C4 with heatpump. VIN VR7**************[VIN obfuscated, can be read by forum staff]

[PaulC5]

If the car has been dealer serviced I would be tempted to stick with them for another year at least in case any problems start to show that might benefit from an extended warranty Stellantis might bring in.

If the air con is still cooling by 10 to 15°C on full and only the central vents, then there is probably enough refrigerant still in the system. As for the amount, I do not know but on our cars when needing regassing, the earliest has been about 7 years except 2 times when the condenser has leaked.

[JT99]

Thanks.

I don't trust R1234yf. The Other Car on R1234yf has needed a regas every 3 years as it is noticeable that it doesn't cool properly then.
The old R134a would go 6 or 7 years easily. (Supposedly a combination of the lower reserve capacity they use now as well as the gas is better/worse at leaching through the seals.)



I can get it regassed much cheaper where I go for MOT than the dealer would charge, and I can't see how a dealer would know it had been done (apart from it would still be working) The heating and cooling depend on it.