INEOS Grenadier trim comparison
2026 INEOS Grenadier Fieldmaster 4WD vs Trialmaster 4WD
The Grenadier Fieldmaster 4WD and Trialmaster 4WD are both priced at $79,000 but differ in 1 spec.
On paper, these two are nearly identical. The choice is styling or packaging, not performance.
There is no price penalty pushing you either way here. Choose the Fieldmaster 4WD if keeping the lower starting price matters; choose the Trialmaster 4WD if you want the nicer equipment factory-installed and under warranty.
These two Grenadier trims land at the same sticker price, so this is not a budget call. It is a straight look at which trim gives you the right capability and equipment.
Lock one trim, change the other side, and move through exact pair pages without resetting back to the full lineup every time.
Who notices the difference
The higher trim starts to make more sense when you want the nicer equipment factory-installed and under warranty.
When both feel the same
The Fieldmaster 4WD and Trialmaster 4WD are mechanically identical where it counts: the same 8-speed shiftable automatic transmission and identical wheelbase and body dimensions.
The upgrade math
Same MSRP. The choice is purely about which features matter to you.
Key Differences at a Glance
This is the fast read: price, power, efficiency, and the feature flips most likely to change the answer.
Every Difference, Side by Side
This is the full read behind the quick decision signals above: the complete hardware, comfort, and equipment story. 1 specification difference, 5 shared.
Full Specification Comparison
Specifications reflect available data as of early 2026. Confirm details with an authorized dealer before purchasing.
| Spec | Fieldmaster 4WD | Trialmaster 4WD |
|---|---|---|
| Pricing | ||
| MSRP | $79,000 | $79,000 |
| Powertrain | ||
| Engine | 3.0L I6 Turbo | 3.0L I6 Turbo |
| Horsepower | 282 hp | 282 hp |
| Torque | 332 lb-ft | 332 lb-ft |
| Transmission | 8-speed shiftable automatic | 8-speed shiftable automatic |
| Drivetrain | 4WD | 4WD |
| Fuel Economy | ||
| City MPG | 15 | 14 |
| Highway MPG | 15 | 14 |
| Combined MPG | 15 | 14 |
| Fuel Tank | 23.7 gal | 23.7 gal |
| Dimensions | ||
| Curb Weight | 5,827 lbs | 5,827 lbs |
| Wheelbase | 115.0" | 115.0" |
| Length | 191.2" | 191.2" |
| Width | 76.0" | 76.0" |
| Height | 80.7" | 80.7" |
| Warranty | ||
| Bumper-to-Bumper | 5yr/60k | 5yr/60k |
| Powertrain | 5yr/60k | 5yr/60k |
| Corrosion | 8yr/unlimited | 8yr/unlimited |
| Roadside Assistance | 5yr/60k | 5yr/60k |
Data sources: licensed third-party automotive data, EPA fueleconomy.gov, NHTSA, and official manufacturer materials. Values marked est. are estimated.
2026 INEOS Grenadier Fieldmaster 4WD vs Trialmaster 4WD Questions Shoppers Ask
Use this page for the direct trim answer, then zoom back out to the INEOS Grenadier lineup, the INEOS brand hub, the Midsize SUVs, the how to pick a trim guide, or our mid-trim value research when you need the bigger shopping path behind this one matchup.
Do the 2026 Grenadier Fieldmaster 4WD and Trialmaster 4WD cost the same?
Yes. Both start at $79,000. There is no MSRP gap between them, so this choice comes down to equipment, features, and configuration differences rather than price.
Do the 2026 INEOS Grenadier Fieldmaster 4WD and Trialmaster 4WD have the same engine?
Yes. Both use the 3.0L I6 Turbo producing 282 hp and 332 lb-ft of torque. The engine hardware does not change between these trims, so the real differences are in equipment and feature content.
Do the 2026 Grenadier Fieldmaster 4WD and Trialmaster 4WD have the same drivetrain?
Yes. Both come with 4WD as standard. The differences between these trims are in features and equipment, not drivetrain.
What warranty does the 2026 INEOS Grenadier come with?
All 2026 INEOS Grenadier trims, including both the Fieldmaster 4WD and Trialmaster 4WD, come with INEOS's standard warranty: 5yr/60k bumper-to-bumper and 5yr/60k powertrain coverage. Warranty does not vary by trim level.
Which 2026 INEOS Grenadier trim gets better fuel economy, the Fieldmaster 4WD or the Trialmaster 4WD?
The Fieldmaster 4WD is the more efficient of the two at 15 combined MPG, versus 14 for the other trim. That matters most if you are balancing running costs against the extra power, drivetrain, or comfort equipment tied to the pricier trim.
Why do the 2026 INEOS Grenadier Fieldmaster 4WD and Trialmaster 4WD look so similar on paper?
The separation is usually in appearance packages, upholstery, or wheel designs rather than in the measurable spec sheet.
The Full Story Behind This Price Gap
Use the direct answer above for this exact matchup, then use these guides to understand whether you are really looking at a feature step-up, a package shuffle, or the point where the lineup starts changing in a meaningful way.
Fuel Economy Comparison
The Grenadier Fieldmaster 4WD gets 1 more combined MPG. At $3.50/gallon and 12,000 miles/year, that saves roughly $200 per year or $1,000 over five years of ownership.
What Both Trims Share
The Grenadier Fieldmaster 4WD and Trialmaster 4WD share the same engine, drivetrain, and transmission. The difference comes down to 1 feature and equipment change, not mechanical differences.
Trim-Matched Accessories
These add-ons are split by trim intent so the recommendations follow the actual use case, not just the same repeated product block.
INEOS Grenadier Fieldmaster 4WD
Value-trim add-onsThese picks fit the Fieldmaster 4WD best when the goal is covering the daily-use gaps without paying up to the next trim.
INEOS Grenadier Trialmaster 4WD
Step-up trim add-onsThese picks suit the Trialmaster 4WD when you want the accessories to match the nicer cabin, broader utility, or more premium use case.
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Specifications shown combine licensed third-party automotive data with official manufacturer, EPA, and NHTSA source material for the 2026 model year. Actual pricing, features, and availability may vary by region and dealer. Always confirm details with an authorized dealer before making a purchase decision. TrimAtlas is not affiliated with INEOS or any dealership.
Page updated 2026-03-18. Verify equipment, pricing, and regional availability with the manufacturer or dealer.