Tesla Supercharger Drops to Fourth in J.D. Power Charging Rankings as IONNA Takes First
Tesla's Supercharger network fell from first to fourth place in the 2026 J.D. Power U.S. EVX Public Charging Study — IONNA scored 807, Mercedes-Benz 797, Rivian 755 and Tesla 701. But the study's bigger story is that public fast charging overall improved 12 points to a record 666.
After five straight years at the top, Tesla's Supercharger network has fallen to fourth place in the 2026 J.D. Power U.S. Electric Vehicle Experience (EVX) Public Charging Study — its lowest ranking since the study began six years ago. IONNA, the network launched in 2024 by eight automakers including BMW, GM, Honda, Hyundai, Kia, Mercedes-Benz, Stellantis and Toyota, took first place among DC fast-charging networks with a score of 807 out of 1,000.
The Mercedes-Benz Charging Network followed at 797, Rivian's Adventure Network scored 755, and Tesla landed at 701 — down slightly from 709 last year, though still well above the segment average of 666, as Drive Tesla Canada reported.
The 2026 DC fast-charging rankings
| Network | 2026 score | Notes |
|---|---|---|
| IONNA | 807 | First place; JV of 8 automakers |
| Mercedes-Benz Charging Network | 797 | Also open in Canada |
| Rivian Adventure Network | 755 | Third place |
| Tesla Supercharger | 701 | Down from 709; 5-time former winner |
| Industry average | 666 | Up 12 points year-over-year |
The bigger story: fast charging is getting better
Tesla losing the crown is the headline, but the study's more useful finding is that the overall DC fast-charging experience improved: satisfaction rose 12 points to 666, with gains across all 10 measured categories. Charger availability jumped 27 points — the largest single increase — while satisfaction with location safety and charging costs each climbed 18 points.
Reliability also hit a study-era best: just 12% of respondents arrived at a public charger and couldn't charge, down from 14% in 2025 and 19% in 2024. Location mattered too — chargers at hotels scored highest at 692, with gas stations and convenience stores at 689 and restaurants at 688. Dealership chargers ranked lowest at 570.
Level 2 public charging moved the other way, dropping 12 points to 595, dragged down by payment and ease-of-charging complaints.
The Canadian read
The study is U.S.-based — it surveyed 6,594 battery-electric and plug-in hybrid owners between January and June — but the trend lines map onto the Canadian market. IONNA's Canadian build-out is still in early stages; the Mercedes-Benz high-power network is already open in Canada; and Tesla's Superchargers remain the largest reliable network in the country. The lesson for Canadian drivers is the same one the scores show: charging satisfaction is now a competitive market, not a Tesla monopoly — and every network is being measured against the standard Tesla set.
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