I took the R2 on a 332 mile round trip drive today to drop some visiting family off at the airport.
On the drive down, we lost 5000 feet of elevation, drove 133 miles, averaged 46.3 mph. Total energy use was 30.84 kWh, for 4.31 miles/kWh or an estimated range from full to empty of about 390-400 miles. But this was going down off the mountain and taking the scenic route for the first big chunk of the drive. After the first 58 miles, we reconnected with the freeway and hit 75 mph for most of the rest of the drive.
After dropping the visitors at the airport, I had to run some errands.
Then I decided to stop for the R2’s first fast charge on my way home. I didn’t think I needed the charge, but figured I probably should grab it anyway. I had enough time to run in to the smoothie shop, order a smoothie, use the restroom, get my smoothie, and run back to the car before it had gained 30%, quite a bit more than I needed. Honestly, even though the R2 only has a 400 V battery, Rivian did a smart thing by upping its charge rate compared with many 400V competitors. The R2 hit a peak of 189 kW and averaged 153 kW over the 10 minutes I was away. They allowed a 2C charge rate peak; I’d have kept it charging at 2C longer than they did, but I understand why they dropped it relatively quickly. The temperature only climbed about 16 ºF over those 10 minutes. Perhaps in a year or two, when they’ve gathered more data, they’ll free that charge curve a bit more.
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The trip back home involved a climb of 5200 feet (those errands took me down another 200 feet in elevation). I took the freeway instead of the scenic route. Most of the route I was able to do 75 mph, but there was an accident on the freeway, which slowed us down for a couple of miles and then there was a thunder and rain storm on the mountain, so that slowed me down again (but did not help with efficiency). My average speed coming back up was 59 mph. The 135 miles required 55.52 kWh of energy (compared with the 30.84 to go about the same distance down). Efficiency was 2.43 miles/kWh. Given that efficiency, the R2’s range would be as low as 221 miles, but I was climbing a mountain and really didn’t set cruise at my usual of 72. I kind of just wanted to get home and didn’t really need the efficiency. I arrived home with 14% remaining charge, or about 40-50 miles.
Overall, the average efficiency, including running the errands was: 332.4 miles requiring 105.6 kWh = 3.15 miles/kWh. That’s about 276 to 286 miles of range with a 5000 foot descent, a 5,200 foot mountain climb, wind and rain, and freeway speeds. Whatever the range scares certain influencers were finding don’t seem to be materializing for me. /shrug
Weather:
On the drive down: Slight headwind with gusts up to about 16 mph. Temperatures started at 71 ºF at home and rose to 97 ºF at the airport.
On the drive up: Mostly clear with slight tailwinds for about 80 miles, then higher crosswinds with gusts up to 25 mph, rain, etc. Temps started at 97 ºF and dropped to 64 ºF by the time I was home.
I have zero concerns about taking the R2 on our road and off-road trips around the US Southwest and farther afield.