I have absolutely zero interest in BMW's new EVs. The iX is a ridiculously oversized turd (much like the Model X) and the i4 is an ICE vehicle made into an EV...a no-no for me given that I've driven pure EVs for the past eight years.
Currently, I own both a 2022 model 3 SR and a 2018 i3s BEV. The model 3 is a nice car with average quality and very poor service and tech support. The i3s is slower but has exceptional BMW service.
The i3s is more fun to drive even though it's not as quick. But it's no slouch. In-gear acceleration is on par with my model 3 from 30 to 75 or more. And it pulls all the way to its limiter.
Handling wise, the i3s leans more but feels more predictable, is way more fun, and much more nimble. The steering is exceptional. It feels like a hot hatch. The model 3 feels like a heavy sedan. On the backroads, you'll be shocked how well the i3s does. It hauls ass.
Interior wise, hands down the i3s is nicer to me. It's beautiful, feels incredibly open and airy, ageless in design. No one believes it's almost a 10 year old design. It has just enough buttons no more. The interface is dated compared to the model 3 but it's just such a nice place to sit in.
Believe it or not, on smooth roads, the i3s is the quieter car. It's so quiet that it shocks you. At speed, wind noise is pronounced but road noise is not. In the model 3 it's the opposite. It has a lot of road noise. At speed and on the highway, the model 3 is a more comfortable car by virtue of the fact that it's a heavier car, has a longer wheel base, and is sprung for cruising at speed.
Overall, I look forward to driving the i3s more. It's just more fun, feels better to drive, and feels special. The carbon fibre tub really makes this car special.
Everything I've written above comparing my two cars can...in essence for me...be applied to comparing the i4 to my i3s. Many will disagree and that's OK. But it's a real shame and a massive mistake by BMW for dropping the i3s and not improving it, modernizing it, and making it more relevant. They didn't need to do much and the tooling was already there. Instead they did a half assed job by making the i4...an EV based on an ICE vehicle. It'll never be as special as the i3s.