Last reviewed: 2026-05-28 > Quick answer: Most current Mercury motors built with DTS already have it (all Verado, Pro XS 150 HP and up, FourStroke 200 HP and up since the model was DTS-equipped). True retrofit of a mechanical Mercury to DTS is rarely cost-effective. The...
Last reviewed: 2026-05-28
Quick answer: Most current Mercury motors built with DTS already have it (all Verado, Pro XS 150 HP and up, FourStroke 200 HP and up since the model was DTS-equipped). True retrofit of a mechanical Mercury to DTS is rarely cost-effective. The honest eligibility path for most boaters is: repower into a DTS-equipped motor. Email your motor serial number to info@harrisboatworks.ca for a same-day yes or no.
Most callers asking about DTS retrofit are surprised by the answer. They expect a parts catalog and a labor estimate. What they actually need is a yes-or-no on whether their current motor already has DTS (many do without the owner realizing), and if not, an honest assessment of whether retrofitting makes more sense than just repowering with a DTS-equipped motor.
This post is the eligibility decision tree. It covers what DTS actually is, how to check if your motor already has it, when retrofit is realistic, and when the right answer is a new motor instead. We do this conversation every spring at HBW, and the pattern is more predictable than online forums make it sound.
Quick eligibility check
| Motor situation |
DTS retrofit eligible? |
Honest path |
| Current Verado V8/V10/V12 (250-600 HP, 2020+) |
Already has DTS |
You already have it. Check your throttle handle. |
| Current Pro XS 150-300 HP (2018+) |
Already has DTS |
Same. Most are DTS-equipped from factory. |
| Current FourStroke 200-300 HP (2018+) |
Most are DTS-equipped |
Verify by serial number, usually yes. |
| Older Verado I6 (2006-2017, 200-350 HP) |
DTS-equipped, harness compatibility varies |
Often workable for harness/controls upgrade |
| Mechanical Mercury 150 HP+ (any age) |
Retrofit possible but rarely worth it |
Quote a repower side-by-side. |
| Mechanical Mercury under 150 HP |
Not eligible for retrofit |
DTS not offered on these classes |
| Twin or triple Mercury rig |
Eligible if all motors are DTS-capable |
Required for joystick. Worth the conversation. |
| Single small motor (under 75 HP) |
Not a DTS use case |
Save the money. Mechanical is correct here. |
If your boat doesn't slot neatly into one of these, email a photo of your motor cowl plate plus your boat year and make to info@harrisboatworks.ca. We'll respond same-day with eligibility and an estimate.
Mechanical Mercury control (left) with two visible push-pull cables vs Mercury DTS control (right) with a sealed wiring harness. The five-second visual check at the helm.
What DTS actually is (and isn't)
DTS is Mercury's drive-by-wire system. Digital Throttle & Shift. Instead of mechanical cables running from the helm control to the motor, DTS uses electrical signals over a SmartCraft network. The throttle and shift commands travel as data, not as cable pulls.
What that buys you in real boating:
- Smoother, more precise throttle response (no cable lag or stretch)
- Lighter helm feel (no force-loaded cables)
- One-handed multi-engine control (single lever controls multiple motors)
- Joystick piloting compatibility (joystick requires DTS)
- SmartCraft integration (live data, diagnostics, alarms)
- Cleaner helm install (one harness instead of dual cables)
What DTS does NOT do:
- It does not add horsepower. A DTS motor and a mechanical motor of the same model make the same peak HP.
- It does not affect fuel economy meaningfully. Drive-by-wire doesn't change combustion.
- It does not make the motor go faster. Top speed is the same.
- It does not work on motors that weren't designed for it. You can't bolt DTS onto a 1990s Mercury 200 HP.
- It does not replace mechanical controls in motors below roughly 75 HP. Mercury still sells mechanical for the smaller classes.
That last point is the one that catches people. DTS is a feature available on Mercury's larger motors only. The smaller portable and mid-range FourStrokes use mechanical controls and will continue to do so. If you're shopping for a 25 HP or 60 HP, this whole eligibility question doesn't apply.
Step 1: Does your motor already have DTS?
The most common surprise: customers calling to ask about retrofit who already have DTS and don't realize it.
The five-second visual check at the helm:
- Throttle/shift control. A DTS control has no visible cable coming out the bottom of the binnacle. It's a sealed unit with a wiring harness. Mechanical controls have two visible push-pull cables.
- Throttle feel. A DTS throttle moves smoothly without the spring-loaded resistance of a cable. It also has a soft click at neutral/forward/reverse detents.
- Multi-engine sync. If you have twins or triples and a single lever controls all engines together, that's DTS.
- SmartCraft gauge or VesselView display. Most DTS rigs have a SmartCraft gauge or VesselView screen showing live engine data.
- Joystick. If you have a joystick at the helm, you definitely have DTS. Joystick requires it.
If any one of those five is true, you have DTS already. The eligibility question becomes "what's the upgrade path within DTS" rather than "can I retrofit."
For the long version of motor age and model decoding, our Mercury Outboard Serial Number Guide walks through year and model identification.
Step 2: If you don't have DTS, can you retrofit?
Yes in theory, no in practice for most customers.
DTS isn't a kit you bolt onto an existing mechanical motor. The DTS-equipped motor has different internal components (electronic throttle body, electronic shift actuator, dedicated DTS engine harness, SmartCraft-compatible ECU). A motor that was built mechanical can't usually be converted to electronic shift without replacing major engine sub-systems.
What CAN be converted in some cases: the helm side. If your existing motor is already DTS-capable (some older Verado I6 models in particular), you can sometimes upgrade just the helm controls and harness while keeping the engine. That's a real upgrade path and the only retrofit conversation that's economically rational.
What CAN'T be converted: A mechanical Pro XS, mechanical FourStroke, or any pre-2010 Mercury that didn't come with DTS. You'd be replacing more parts than the motor is worth.
The honest decision matrix:
- Motor is already DTS-capable but you have mechanical controls → helm-side upgrade is real. Get quoted.
- Motor is mechanical, under 5 years old, low hours, otherwise excellent → quote a full repower against the retrofit cost. Usually repower wins.
- Motor is mechanical, 5+ years old or high hours → repower territory. Don't pour money into retrofit.
- Single motor, smaller boat, no joystick interest → DTS is a "nice to have" not a "need." Mechanical is the right call.
- Twins or triples without joystick → adding DTS unlocks joystick, which is the real value driver. Worth the conversation.
Step 3: HP class eligibility
Mercury offers DTS on the following motor classes (current model year 2026):
| HP class |
Motor family |
DTS availability |
| 250-600 HP |
Verado V8/V10/V12 |
Standard on all |
| 150-300 HP |
Pro XS |
Standard on most current |
| 200-300 HP |
FourStroke V8 |
Standard on most current |
| 75-150 HP |
FourStroke I4 |
Optional on select models |
| Under 75 HP |
All families |
Not available |
The numbers shift slightly model year to model year (Mercury sometimes adds or drops DTS as a standard feature on a given HP). The safe rule: 150 HP and up, plan on DTS being standard or available. Under 150 HP, check before assuming.
For the official source, Mercury's product pages at mercurymarine.com list DTS as a feature on each model. Or send us your boat details and target HP and we'll tell you which DTS-equipped motors fit your transom.
The joystick path: why most DTS retrofit calls are actually joystick calls
Roughly half the customers who call us asking about DTS retrofit are actually asking about joystick piloting, even if they don't say it that way. They want the ability to slide the boat sideways at the dock or hold position with one hand.
Joystick piloting (Mercury Joystick Piloting for Outboards) requires:
- Two or more Mercury outboards (single-engine boats are not eligible, period)
- All engines DTS-equipped
- Specific helm hardware (joystick module, SmartCraft gateway, compatible VesselView display)
- Proper boat geometry (motors must be far enough apart for vectoring to work)
If you're calling about DTS retrofit and you have a single engine, joystick isn't on the table. Stop the retrofit math right there. DTS alone for single-engine boats rarely justifies the cost.
If you have twins or triples, joystick is the real eligibility question. DTS is just the prerequisite.
Step 4: How to check your specific eligibility
Five things to confirm before you commit money.
- Current motor model and year. From the cowl plate (lower starboard side of the motor) or VesselView display.
- Current motor serial number. This tells us which DTS configurations are available for that motor year.
- Helm controls. Are your current controls mechanical (visible cables) or already DTS (sealed binnacle with wiring harness)?
- Multi-engine rig? Single, twin, or triple. Joystick eligibility lives here.
- Boat year and make. Some older boats have helm/dash configurations that complicate DTS install. Worth flagging up front.
Email a photo of the motor cowl plate plus the helm controls to info@harrisboatworks.ca. We'll respond same-day with eligibility and a configuration recommendation. If retrofit is the right answer, we'll quote it. If repower is the right answer, we'll be honest about that too.
What we see at HBW
A few patterns from our DTS conversations every spring on Rice Lake and the Kawarthas.
The first pattern: more customers already have DTS than realize it. A guy calls asking about retrofitting his "newer Mercury" with DTS, we ask for the serial, look it up, and 9 times out of 10 his 2022 FourStroke 250 already has it. The conversation switches from "can I add it" to "how do I use what I have." Five-minute conversation instead of a $4,000 quote.
The second pattern: customers wanting DTS for the "smoother throttle" alone usually back off when they see the cost. A standalone DTS upgrade on a single-engine boat is a four-figure ticket once you add helm controls, harness, gateway, and labor. The smoother-throttle benefit is real but rarely worth the price. The customers who DO pull the trigger are usually twins-or-more rigs upgrading for joystick.
The third pattern, specific to Ontario boating: late-season dock approaches in fall winds at Rice Lake or in tight cottage dock spaces in the Kawarthas. Joystick piloting earns its keep in those moments. Customers who switch from twin mechanical to twin DTS with joystick almost never go back. The ability to crab sideways into a dock in a cross-wind without a second person on the bow is the kind of thing you don't appreciate until you have it.
Fourth pattern: the worst DTS install we ever rescued was a customer who had bought a "DTS retrofit" kit online for an old Mercury 225 that wasn't DTS-capable. Three months of helm wiring trying to make it work before he called us. We sold him a new 250 Pro XS DTS, took the old one in trade, finished the install in a week, and he was back on the water. Not every retrofit story has a happy ending. Sometimes the honest answer is "this isn't the path."
“Asked about adding DTS to my 2022 Pro XS 300. Turned out I had it the whole time. Five-minute conversation saved me four grand.
–Most common DTS retrofit conversation at HBW
DTS retrofit decision
Retrofit DTS or repower?
Repower territory
- ✓Mechanical motor 5+ years old
- ✓High hours on the existing engine
- ✓You want joystick (requires DTS-equipped twins or more)
- ✓Retrofit cost is close to a new motor
New DTS-equipped motor is the right answer
Retrofit makes sense
- ✓Your motor is already DTS-capable (some older Verado I6 models)
- ✓You currently have mechanical controls at the helm
- ✓The helm-side upgrade unlocks DTS without engine work
- ✓Single-engine and you're not chasing joystick
Helm-side retrofit is the real upgrade
When in doubt:Quote both paths if your mechanical motor is under 5 years old, low hours, and otherwise excellent. Get the retrofit and a full repower quoted side by side before committing.
Why this matters for Ontario boaters
A few Ontario-specific notes that make DTS hit different here.
Multi-engine boats are common on bigger water. Lake Ontario, Simcoe, Couchiching, and the Trent-Severn run a lot of twin-engine setups. DTS standard equipment on the motors that fit those boats. Customers in those markets either already have DTS or are repowering into it on the next motor change.
Single-engine pontoons rarely need DTS. Most Rice Lake and Kawartha Lakes pontoons run a single motor in the 90-200 HP range. The DTS conversation rarely applies. Mechanical is correct for most pontoon repowers.
Late-season docking conditions. Ontario boaters often run into October. Cross-winds, current at lock approaches, tight cottage docks. Joystick piloting (which requires DTS) is the real upgrade story here, not DTS for its own sake.
Verado lineup matters. All current Verado V8/V10/V12 (naturally aspirated, 250-600 HP) come standard with DTS. If your boat is in that class, you don't have a DTS retrofit decision. You have a Verado vs Pro XS vs FourStroke decision, and DTS comes with all three at that HP.
Ready to confirm DTS eligibility?
Phone: 905-342-2153
Email: info@harrisboatworks.ca (send motor cowl plate photo + helm controls photo for a same-day yes/no)
Quote a repower: mercuryrepower.ca
Harris Boat Works · 5369 Harris Boat Works Rd, Gores Landing, ON · Mercury Marine dealer since 1965, current Platinum Dealer.
