For a 2018 Tesla Model X, the build month tells you more than the badge does. Cars built from March 2018 have the quicker MCU2 screen computer, and 100 kWh cars built before November 2018 have a 72 A onboard charger.
The lineup itself was simple: 75D, 100D and P100D. The 90D was gone from the EPA's 2018 list. So the real choice is battery size and build window.
Three build windows, three different cars
| Built | Screen computer | Onboard charger (100D, P100D) | What to know |
|---|---|---|---|
| Before March 2018 | MCU1 | 72 A | Check recall 21V035000 is done |
| March to October 2018 | MCU2 | 72 A | The sweet spot of the year |
| November 2018 on | MCU2 | 48 A | Black Premium interior standard |
The 75D's charger for 2018 is not confirmed in the sources we checked. Plug it in and read the maximum amps on the charging screen. That number settles it.
The November 2018 change came with a price shuffle: the 75D went up to $84,000, the 100D came down to $99,000, and the six-seat center console option was dropped.
MCU1 or MCU2: why March 2018 is the dividing line
MCU1 used an Nvidia Tegra chip. MCU2 moved to an Intel Atom processor and added 5 GHz Wi-Fi and newer Bluetooth. The difference shows up every day: map redraws, browser use and the time from getting in to a usable screen.
The bigger issue with MCU1 is its eMMC memory chip, which wears out. Recall 21V035000 replaces the board when it fails, because a dead chip can kill the rearview camera. Tesla launched a paid MCU2 upgrade for older cars at $2,500 in 2020, and it removes AM/FM and Sirius XM radio. A March-or-later build avoids the question entirely.
Autopilot hardware is HW2.5 across the year. Owners who bought Full Self-Driving were offered the HW3 computer swap, so a car with FSD may have been upgraded.
Nine recalls, one needing a shop
NHTSA lists nine campaigns for the 2018 Model X, as of October 2026, and eight of them were fixed over the air. The one service visit is 21V035000, and it applies only to MCU1 cars built before March.
The OTA list includes 22V169000 (rearview image slow to appear when reversing) and 22V818000 (power steering assist could drop out after a pothole). Both should already be on any car that has taken software updates. Check open campaigns on NHTSA's VIN lookup.
- 21V035000January 29, 2021Back over prevention, softwareService visit
MCU1 media control unit eMMC memory wears out, which can cause loss of the rearview camera and other functions; firmware 2020.48.48.12+ and VCM daughterboard replaced. - 21V846000October 29, 2021Forward collision avoidance, sensing system, cameraSoftware update
Communication error may cause false forward collision warnings or unexpected automatic emergency braking. - 22V037000January 27, 2022Electrical system, adas, autonomous/self driving, softwareSoftware update
FSD (Beta) 'rolling stop' may let the vehicle go through an all-way stop without stopping; feature disabled. - 22V169000March 18, 2022Back over prevention, display functionSoftware update
Rearview camera image may not appear quickly enough when reversing (FMVSS 111). - 22V818000November 1, 2022Steering, electric power assist systemSoftware update
Power steering assist can be lost on rough roads or after a pothole impact; steering system recalibrated. - 23V085000February 15, 2023Steering, automated/adaptive steeringSoftware update
FSD Beta may act unsafely around intersections and respond poorly to speed limit changes.
Show all 9 recalls
- 23V838000December 12, 2023Electrical system, adas, autonomous/self driving, softwareSoftware update
Autosteer controls may not be sufficient to prevent driver misuse. - 24V051000January 30, 2024Electrical system, instrument cluster/panelSoftware update
Brake, Park and ABS warning lights shown in a font that is too small (FMVSS 105/135). - 24V376000May 28, 2024Seat belts, front, warning light/devicesSoftware update
Seat belt warning light and chime may not activate for an unbelted driver (FMVSS 208).
Source: NHTSA recalls API. A recall only applies if your VIN is listed.
What owners and reviewers complain about
Owners have filed 140 complaints for the 2018 model year with NHTSA, as of October 2026. Suspension tops the list, then forward collision avoidance and electrical faults.
Edmunds' review points at build quality more than mechanical failures: inconsistent panel gaps, paint and rubber gasket quality, occasional cabin noises and rear doors that creak fairly often in cold weather. On a test drive, listen around the falcon wing doors over bumps and run the doors through a full cycle in the cold if you can.
140 owner complaints filed with NHTSA for the 2018 Model X. Most frequent areas (approximate order): suspension; forward collision avoidance; electrical system; unknown or other; seats; structure. Source: NHTSA complaints database.
Range, specs and the 2018 crash rating
The 100D's 295-mile EPA rating made it the long-range pick, and it matched the P100D's practicality without the P100D's thirst: 39 kWh per 100 miles versus 40. The 75D's 238 miles works for commuting, but on a pack this age, long trips get tight in winter.
| Trim | EPA range | Efficiency | Home AC max | Price (USD) |
|---|---|---|---|---|
| 75D | 238 mi | 36 kWh/100 mi | n/a | n/a |
| 100D | 295 mi | 39 kWh/100 mi | 17.3 kW | n/a |
| P100D | 289 mi | 40 kWh/100 mi | 17.3 kW | n/a |
NHTSA's 2018 record carries five stars overall and in the frontal, side and rollover tests, with a 9.3% rollover risk.
| NHTSA test | Rating |
|---|---|
| Overall | 5 stars |
| Frontal crash | 5 stars |
| Side crash | 5 stars |
| Rollover | 5 stars |
| Rollover risk | 9.3% |
72 A or 48 A: setting up home charging
Whatever the car's onboard charger, the practical home setup is the same: a Wall Connector on a 60 A two-pole breaker, set to 48 A, adding about 35 miles of range per hour according to Tesla's charging table. A 100D takes roughly 9 to 10 hours from empty to full at that rate.
A 72 A car can only go faster on an older Gen 2 Wall Connector on a 90 A breaker. For most households that extra circuit isn't worth the cost, because the car is parked overnight anyway. Our guide to Tesla charger circuit sizes covers each breaker size, and what a Wall Connector install costs explains the price range.
Worked example: what 1,000 miles costs at home. The EPA rates the 2018 100D at 39 kWh per 100 miles, a figure that includes charging losses.
- 1,000 miles x 0.39 kWh per mile = 390 kWh
- 390 kWh x $0.1831 (EIA US average, July 2026) = about $71
At a Supercharger the bill is far higher; our guide to home vs Supercharger charging costs compares the two.
| How you charge | Speed |
|---|---|
| Wall Connector at 72 A (17.3 kW, 90 A breaker) | about 53 mi of range per hour |
| NEMA 14-50 outlet, Mobile Connector at 32 A | about 23 mi per hour |
| Regular 120 V outlet | 2 to 3 mi per hour |
| Empty to full, largest pack (about 100 kWh) | about 6.5 hours at 17.3 kW |
Rates scale Tesla's published Wall Connector table for this model; older cars and cold batteries charge slower. Times are estimates.
What to check before you buy a 2018 Tesla Model X
- Build date on the B-pillar label: before March 2018 means MCU1.
- Max amps on the charging screen: 72 A or 48 A.
- Recall 21V035000 complete if the car has MCU1.
- Panel gaps, door seals and creaks from the rear doors.
- Battery cover: Tesla's original terms for 2018 weren't confirmed for this page, but any eight-year term on a 2018 delivery ends during 2026.
- CCS1 adapter eligibility in the Tesla app; older S and X may need Tesla's $380 retrofit package.
Compare it with the Tesla Model X 2017 and the 2019 Tesla Model X, which brought a new front motor in April 2019, or step back to the Model X model-year changes overview.
Owners and shoppers ask about the 2018 Model X
Does the 2018 Model X have MCU1 or MCU2?
It depends on the build date. Tesla moved Model S and X production to MCU2, the Intel Atom computer, in March 2018. Cars built before that have MCU1 with its known memory wear problem, covered by recall 21V035000. The quickest check is the screen's software page, or ask Tesla service to confirm the hardware from the VIN.
What is the range of a 2018 Tesla Model X?
The EPA rated the 2018 75D at 238 miles, the 100D at 295 and the P100D at 289. Those were new-car figures. Tesla's fleet data shows Model S and X packs average about 12% capacity loss after 200,000 miles, so check the range shown at a full charge rather than relying on the badge.
Is the 2018 Tesla Model X reliable?
It is more settled than the 2016 and 2017 cars. NHTSA lists nine recalls and 140 owner complaints as of October 2026, and only the MCU1 memory recall needed a technician. Edmunds noted uneven panel gaps, paint and rubber seal issues and rear doors that creak in cold weather, so a careful inspection matters more than the recall list.
How much does it cost to charge a 2018 Model X at home?
Using the EPA rating of 39 kWh per 100 miles for the 100D and the US average of 18.31 cents per kWh (EIA, July 2026), 1,000 miles costs about $71. The 75D is a little cheaper at 36 kWh per 100 miles, about $66. Your own rate, and any off-peak plan, changes the result.
Does a 2018 Model X need a 72 amp charger at home?
No. Even a 72 A car charges happily from a 48 A Wall Connector on a 60 A breaker, adding about 35 miles of range per hour. The 72 A rate only works on an older Gen 2 Wall Connector on a 90 A circuit, and cars built after November 2018 have a 48 A charger anyway.
Sources
- NHTSA recalls, 2018 Tesla Model X, api.nhtsa.gov
- NHTSA safety ratings, 2018 Model X, api.nhtsa.gov
- Autoblog: Tesla Model S/X price and option changes; 72 A charger replaced by 48 A, autoblog.com
- TeslaTap: MCU1 vs MCU2, teslatap.com
- Electrek: Tesla launches $2,500 MCU upgrade, electrek.co
- Edmunds: 2018 Tesla Model X, edmunds.com
- EIA: average residential electricity price, eia.gov
- Tesla Support: Wall Connector, tesla.com
- EPA data via MPGBuddy: 2018 Model X 100D, mpgbuddy.com
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