Vehicle price comparison
Mercedes E Class vs Buick Regal Transmission Control Module prices
Saurabh Kumar
Co-Founder & CTO, Part Price Guide
Built the pricing pipeline that collects and normalizes used OEM part listings from salvage yards and online marketplaces across the US.
Ambika Sharma
Co-Founder & COO, Part Price Guide
12 years of project management and technical operations experience. Reviews price guides for sample size, fitment accuracy, and data freshness.
Price face-off
Median price comparison
Condition comparison
How does the price differ by part grade?
Market analysis
Why does the Mercedes E Class transmission control module cost more?
A used Mercedes E Class transmission control module carries a median asking price of $107, which is 7% higher than the Buick Regal at $100. Supply also plays a role: Mercedes E Class has 27,703 priced listings versus 4,141 for Buick Regal, and more listings generally mean more choices and more competitive pricing.
Grade A (excellent condition) parts make up 91% of Mercedes E Class listings compared to 75% for the Buick Regal, so buyers looking for top-condition units will find more options on the Mercedes E Class side.
The Mercedes E Class average ($127) runs 19% above its median ($107), indicating a tail of high-priced listings — likely low-mileage or remanufactured units pulling the average up.
Our guide covers 10 model years for the Mercedes E Class (2015–2024) but only 6 for the Buick Regal (2015–2020), so the Mercedes E Class data reflects a broader range of generations.
Buyer's checklist
What to check before buying a used transmission control module
- Match OEM hardware and software part numbers exactly, as shift schedules and solenoid driving algorithms differ between gear ratios and engine sizes.
- Determine if the module is standalone, integrated into the PCM/ECM, or mounted internally on the transmission valve body (mechatronic unit).
- Check if the module requires VIN programming, clutch adaptation relearns, or flash updating before normal gear engagement will occur.
- Inspect connector pins for fluid wicking; leaky transmission harness seals can force transmission fluid up into the TCM connector plug pins.
Full price guide
Mercedes E Class Transmission Control Module
$18 – $637 · 27,703 listings
Full price guide
Buick Regal Transmission Control Module
$17 – $440 · 4,141 listings
Common questions
Mercedes E Class vs Buick Regal transmission control module FAQ
Is a used Mercedes E Class transmission control module cheaper than a Buick Regal?
Buick Regal has the lower median by $7 (7%). The Buick Regal transmission control module ranges from $17 to $440 across 4,141 listings, while the Mercedes E Class ranges from $18 to $637 across 27,703 listings.
Can I use a Mercedes E Class transmission control module in a Buick Regal?
This comparison describes pricing, not interchangeability. Even when two parts share similar prices, they may require different engines, trims, electronics, or mounting points. Always match the seller's part number against your VIN before purchasing.
How many listings does this comparison cover?
This comparison draws from 27,703 priced Mercedes E Class listings and 4,141 priced Buick Regal listings — 31,844 in total.
How does condition grade affect the price?
Part condition significantly impacts price. Grade A (Excellent): Mercedes E Class $118 vs Buick Regal $103. Grade B (Good): Mercedes E Class $100 vs Buick Regal $100. Grade C (Fair): Mercedes E Class $75 vs Buick Regal $75. Grade A parts are in excellent condition, B is good, and C is fair — always confirm grading criteria with the seller.
Are there different trim variants to choose from?
Yes. The Mercedes E Class transmission control module has 2 trim variants and the Buick Regal has 23. Variants differ by engine size, drivetrain, or part number — matching the right variant is critical for proper fitment.
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