Tesla Semi Beats Diesel on Uptime — Does It Matter for Your Lease?
Tesla's new Semi data shows higher uptime than diesel trucks. Here's what the EV reliability story means for Australian novated lease customers considering EVs.
Tesla has released operational data showing its Semi electric trucks experience less downtime than diesel equivalents — a claim reported by The Driven (Source 1). That's a big deal in the commercial fleet world, where every hour off the road is money out the door.
Now, the Semi is a heavy freight truck — not something you're novated leasing for the school run. But the uptime data matters because it chips away at one of the most persistent objections to EVs generally: that they're less reliable, more expensive to keep running, and a gamble compared to a proven diesel or petrol drivetrain.
What this means for novated lease customers
Reliability anxiety is real, and it's one of the main reasons some employees still hesitate when considering an EV on a novated lease. The logic is understandable — you're committing to a vehicle for three to five years, and if it spends time in the shop, that's your problem.
What Tesla's Semi data adds to the broader EV conversation is a growing body of real-world evidence that electric drivetrains have fewer moving parts, lower service frequency, and in this case, demonstrably better uptime than combustion alternatives. Passenger EVs like the Model 3, Model Y, BYD Atto 3, and others have been making the same argument in consumer reliability surveys for a couple of years now.
For novated lease customers, the practical upside is this: EVs on novated leases already attract a significant FBT exemption under current legislation for eligible vehicles — and lower running and maintenance costs can further improve the value of the arrangement over the lease term. Less servicing generally means fewer out-of-pocket costs sitting outside your lease package.
Common questions
Does EV reliability affect my novated lease in a practical way?
Yes — lower servicing frequency means fewer expenses that might fall outside your packaged running costs. EVs typically have fewer mechanical components than petrol or diesel vehicles, which translates to fewer scheduled service visits over the life of a lease.
Is the Tesla Semi available on a novated lease in Australia?
No. The Tesla Semi is a heavy commercial freight truck and is not a passenger or light commercial vehicle eligible for personal novated leasing. The uptime data is relevant as evidence of EV drivetrain maturity, not as a direct product option.
Which EVs are currently FBT-exempt under a novated lease?
Under current Australian legislation, eligible battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs) under the luxury car tax threshold may qualify for the FBT exemption. You should confirm your specific vehicle and circumstances with a licensed adviser — millarX can walk you through this.
I've heard EVs have expensive battery replacements — is that a real risk on a lease?
Battery degradation is real but typically gradual, and most manufacturers offer battery warranties of eight years or more. Over a standard three-to-five year novated lease term, battery replacement is rarely a realistic concern for mainstream EVs.
Should I wait for more reliability data before leasing an EV?
That's a personal call, but the data is already substantial. Mainstream EVs from Tesla, BYD, Hyundai, and others have multi-year Australian real-world track records. Waiting indefinitely is itself a financial decision — you forgo potential tax savings in the meantime.