Model Y novated lease — provider assumed 18kWh/100km, my real number is 14. Does that gap ever get reconciled?
Signed a 4-year novated lease on my Model Y back in March. The running cost budget my provider set is based on an assumed 18kWh/100km, which I only really looked at closely last week once I started actually logging my own charging properly. My own number, mostly home charging plus the odd public top-up, is coming out closer to 14kWh/100km. That's a decent gap to be carrying over a year.
Does anyone know if this actually gets trued up at some point — like an annual reconciliation against real usage — or is the running cost component basically a flat number I keep paying into every cycle regardless of what I actually use? I emailed my provider about it and got a pretty generic reply that didn't really address my specific numbers, so figured I'd ask people who've actually been through a full year or two of one of these leases rather than guess.
Filed under: Novated Lease & Charging Cost
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12 ANSWERS
@jdubzJuly 31, 2026
Same story on my end, running cost line's never moved once since I signed eighteen months back. Payslip just shows one deduction, no split anywhere between what was assumed and what I'm actually using. Never chased it, wouldn't know who to even ask.
@bennyboy21July 29, 2026
Mine got adjusted down after about eight months. Sent through a run of odometer photos when I emailed asking why the number looked high for what I was actually driving. No idea if that only happened because I pushed or if it was scheduled anyway.
Did you have to follow up more than once to get that adjustment, or did one email do it? Mine just repeated the original figure back at me like I hadn't said anything.
Two follow-ups actually - first email got basically the same boilerplate you're describing, word for word. What changed things was the second one: I attached the odometer photos and specifically asked for the assessment to be redone rather than just restating my concern in different words. So not a single email, but not an endless fight either, just had to get more specific about what I actually wanted them to do.
Tried something similar and got told the running cost budget only gets looked at again at renewal, not mid-cycle. Might just be a different provider, or maybe I got a less flexible person on the phone that day.
@margs4lifeJuly 31, 2026
Not on a novated lease myself, genuinely just here to learn — is 18kWh/100km high for a Model Y or about normal? Nothing to compare it against since my MG4 was just a straight purchase.
No idea if it's high generally, only that it's higher than what my own dash and home charger numbers are showing side by side. Might be completely normal for someone who drives differently to me.
18kWh/100km is on the high side for a Model Y, not wildly abnormal but noticeably above what most owners report. Real-world numbers I've seen floated in owner groups usually sit more in the 15-17 range for mixed city/highway driving, with the official rated figure closer to 14-15 for the base RWD. If your provider's assumption is based on the Performance or Long Range AWD variant instead of whatever trim you actually have, that alone could explain a chunk of the gap - those pull noticeably more than the base car.
@davo9July 24, 2026
Not across the lease side of any of this, but my own kWh/100km bounces between about 13 and 17 depending how much I'm pulling off the battery versus grid that week. Took a few months before mine settled into anything I'd call a real number.
Fair point about it taking a while — I've only got a few weeks of proper logging behind me so far, might tighten up or drift further the longer I track it.
@fi_macJuly 24, 2026
Does your provider actually break the running cost component out on the annual statement, or did you have to go digging and email them like OP did? Trying to figure out if this is even visible without chasing it down.
@just_lurking22July 24, 2026
does the reconciliation depend on the provider, or is a flat running-cost number pretty standard across novated leases generally?
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