Automotive Chip Price Hikes Spread Through Memory, MCU, Analog and Power: NOR Flash and SLC NAND Double in 2026, MCU Up 5–20%

Automotive chip pricing in 2026 did not rise across the board. It spread in a sequence: memory first, then analog, then MCU, then power semiconductors. TrendForce puts the cumulative 1H26 increase in NOR Flash contract prices at 100–120%, and SLC NAND at 130–150%. Applied to a bill of materials, that works out to roughly RMB 300–900 added to an entry-level ICE car, RMB 800–2,500 for a mainstream EV with L2 assistance, and up to RMB 6,000 for an 800V platform with high-level ADAS, according to a 29 September 2026 analysis by Zhineng Auto. The variable that matters to procurement and hardware teams is shifting from whether parts can be obtained to what price and what date they can be locked.

Four Lines of Increase, Four Very Different Numbers

Beneath the headline, the numbers are not comparable:

Memory: automotive NOR Flash and SLC NAND up 100–150% year to date; automotive DRAM and eMMC/UFS broadly up 70–180%.
MCU: mainstream automotive parts up 5–20%, with 7–15% the most representative band; Chinese 8-bit and 32-bit MCUs up about 5–20%.
Analog and power management: broadly 10–20%, with scarce isolators, PMICs and long-lead-time part numbers reaching 30–85%.
Power semiconductors: automotive MOSFETs and IGBTs about 10–20%, SiC devices and modules 10–25%, power foundry 10–15%.
Not yet broad: ADAS SoCs, automotive CIS, mmWave radar and MEMS face cost pressure but lack evidence of a uniform increase.

The pressure comes from outside the car. AI server demand has led foundries to allocate a growing share of wafer capacity to AI products; average 8-inch utilisation among the world's top ten foundries recovered to 88% in 2026, and strained nodes have already seen 5–10% increases. Memory makers are prioritising HBM and high-layer 3D NAND, squeezing the mature-node capacity NOR Flash and SLC NAND depend on (TrendForce, 30 June 2026).

Automotive NOR Flash and SLC NAND: Biggest Jump, Hardest Swap

NOR Flash holds ECU firmware and boot code, and its value lies in execute-in-place (XIP) and reliability. SLC NAND serves control systems where endurance, wide temperature range and data integrity matter. Neither accounts for much of a bill of materials, and neither can be swapped quickly: re-qualification restarts the automotive validation clock, which runs in quarters rather than weeks.

TrendForce expects the two to diverge in 2H26: high-capacity NOR Flash at 256Mb and above, pulled by AI servers and automotive electronics, could rise another 90–110%. Parts at 128Mb and below face moderating consumer-grade increases as Chinese capacity comes online, with 4Q26 increases of 10–20%. SLC NAND, meanwhile, is absorbing industrial and automotive demand displaced by the MLC shortage as customers shift to 4Gb and 8Gb devices; TrendForce expects 2H26 contract prices another 120–170% above 1H26. CCTV Finance reported that automotive-grade memory prices surged roughly 180% between March and June 2026.

Supply is consolidating too. Winbond said in February its 2026–2027 capacity was sold out. On 16 September, Infineon agreed to sell its NOR flash and F-RAM business to Winbond for US$1.12 billion, a deal expected to close in 2H27 and to lift Winbond's global NOR Flash share from roughly 23% to about 34%. The top five automotive NOR Flash suppliers already hold around 84% of that market.

Automotive MCU: 5–20% Headline, High-End 32-bit Moves First

MCUs run lighting, wipers, seats, motors, thermal management, BMS and body control — a vehicle cannot ship without them. Pricing moved from scattered notices to an industry-wide pattern during 2026: STMicroelectronics issued three increases (effective 26 April, 28 June and 23 August), with some automotive MCU part numbers up 15–20% and power device lead times beyond 30 weeks, in some cases 52; NXP repriced automotive MCUs in January, April and June; Texas Instruments has adjusted prices about five times in twelve months; Infineon's July round raised automotive IGBTs and high-voltage MOSFETs 10–20%.

The firmest prices belong to high-performance 32-bit parts already designed into vehicle platforms, where substitution is not an option within the model cycle. Six suppliers — NXP, Renesas, Infineon, ST, TI and Microchip — hold roughly 98% of automotive MCU share, and around 70% of the high-end segment sits with the top three. Chinese automotive MCU localisation remains below 5%, held back by three-to-five-year qualification cycles and ASIL-D requirements. Parts most often evaluated today include:

Nuvoton NuMicro M2A23: Arm Cortex-M23 at 72MHz, 256KB flash and 24KB SRAM, three CAN FD, one LIN, two UART and two USCI interfaces, 2.5–5.5V, −40°C to 125°C, AEC-Q100 Grade 1, QFN48 and LQFP64 packages.
Nations Technologies N32A455: Cortex-M4F at 144MHz with FPU and DSP support, 512KB embedded flash and 144KB SRAM, 40nm automotive process, 1.8–3.6V, −40°C to 125°C, AEC-Q100 qualified.
XHSC HC32A4A0: Cortex-M4 at 240MHz (300DMIPS), 2MB dual-bank flash and 516KB SRAM, two CAN FD, ten USART, one QSPI with 240Mbps XIP, two USB plus Ethernet MAC, 1.8–3.6V, −40°C to 105°C, AEC-Q100 Grade 2; the pin-compatible HC32A4A8 adds ECC flash and ASIL-B functional safety.

On the code-storage side, GigaDevice's GD25/GD55 automotive SPI NOR Flash is qualified to AEC-Q100 and ISO 26262 ASIL D, with densities up to 2Gb.

Analog and Power: 10–20% Is the Norm

Analog spans a huge number of part numbers. ADI repriced from 1 February, with commercial parts up 10–15% and industrial parts around 15%, plus a second round in September; TI raised selected digital isolators and PMICs 15–85% in April. NXP adjusted automotive and industrial products in April and June, and Infineon repriced selected power switches and power ICs in April and July. That 85% figure is an outlier, not an industry rate: automotive analog and power management is broadly 10–20%, with scarce isolators and long-lead-time parts reaching 30–85%.

Chinese power device makers have been more active: Jiejie Microelectronics raised MOSFETs and IGBTs 10–20% in successive rounds, Yangjie Technology adjusted its full line 10–15% from July, Silan lifted selected power chips more than 15%, and in July several Chinese SiC MOSFET, IGBT and NOR Flash makers repriced 15–25%. After two years of aggressive SiC expansion and brutal price competition, increases are uneven: imported high-end parts moved first, domestic parts have stopped falling, and modules vary by customer and platform.

What It Adds to the Bill of Materials per Vehicle

A 100% chip increase does not mean a 100% vehicle cost increase. S&P Global Mobility estimates 2025 average semiconductor content at about US$1,014 per vehicle globally, with ECUs at about US$1,982. Zhineng Auto's three scenarios, at roughly RMB 7.1 per dollar and chips only:

Entry ICE: about RMB 300–900.
Mainstream EV with L2 assistance: about RMB 800–2,500, roughly 0.4–1.7% of a RMB 150,000–250,000 vehicle.
800V platform with high-level ADAS: about RMB 3,000–6,000, as high-capacity memory, high-voltage power and more control nodes rise together.

Claims of RMB 7,000–10,000 per vehicle are not baseless, but they usually describe spot buying without contract cover, a design using high-capacity DDR5 or UFS, other materials such as lithium carbonate folded in, or one extreme part number extrapolated across the whole BOM. Gasgoo quoted supply chain estimates of RMB 500–1,000 in May 2026. Rising memory content amplifies the arithmetic: TrendForce estimates a digitally advanced vehicle needs at least 40GB of DRAM, with high-end configurations above 100GB. Price pass-through lags one to two quarters, so the cost becomes visible in financials from late 2026.

HSY Perspective

The question we hear most now is whether prices can still be locked in. Honestly, the first half of the year was about price and the second half is about allocation — for a given part number, getting an allocation and a delivery date matters more to a production line than two percentage points. When customers bring us a price-increase letter and ask whether to build stock, we look first at how locked the design is. On a platform already in production, swapping an automotive MCU or a NOR Flash part restarts qualification, so we would rather secure volume early. On a platform still in prototyping, a price increase is actually a good moment to reopen the architecture discussion. What sits on our shelf is fairly practical: Nuvoton's M2A23 (Cortex-M23, AEC-Q100 Grade 1) suits interior lighting and body control; Nations Technologies' N32A455 (M4F, 144MHz, 512KB flash) is widely used in BMS and body work; and XHSC's HC32A4A0 (M4, 240MHz, 2MB dual-bank flash) fits gateways and T-Box designs.

The pitfalls we run into cluster in a few places. One is treating "in stock" as "interchangeable." Automotive substitution is not a matter of matching a parameter table; beyond AEC-Q100 there is OEM software adaptation and bench validation, which usually takes longer than the notice period on a price letter. Another is watching only the main controller. PMICs, isolators and gate drivers have risen harder than MCUs, so the scattered analog devices in a BOM often break the cost case in the end. This cycle is not the 2021 shortage: back then the constraint was capacity and qualification, now it is supply at a controllable price. That difference shows up at design-in, where dual-sourcing decisions are made two years earlier, and customers who qualified a domestic second source are feeling much less pain this year. Domestic substitution cannot shorten a three-to-five-year qualification cycle either; what it buys is supply certainty and negotiating room later. On inventory, tier by how locked the platform is: six months or more for production parts, flexibility on prototyping parts, and do not bet on prices falling, because TrendForce still expects high-capacity NOR Flash and SLC NAND to rise further in 2H26. If you are evaluating automotive MCUs or the surrounding power and isolation parts, send us your platform timeline and volumes and we can line the options up against your supply plan.

Sources: Zhineng Auto on automotive memory prices, Sohu, 29 September 2026; TrendForce memory and mature-node pricing releases, 2026; S&P Global Mobility, "The impact of semiconductor tariffs on auto costs," February 2025; EET China on STMicroelectronics' third 2026 price increase effective 23 August, 20 August 2026; Gasgoo per-vehicle chip cost estimate, May 2026; CCTV Finance on automotive-grade memory prices; 21st Century Business Herald on Winbond's acquisition of Infineon's memory business, 18 September 2026; Nuvoton, Nations Technologies and XHSC product documentation.