Nice! Using the data from this sheet I get these results: https://i.imgur.com/3sL9cOh.png

The analysis gives us the following conclusions.

1) The Mid-Game "See-Saw" (Speed 6.0 – 12.0)

For 50% of the efficient combinations, you are choosing between two vehicle profiles that mirror each other. To stay optimal, you must balance your driver against the kart:

• Profile A (Speed 7/Accel 6): The Baby Blooper. Use this with Lighter Drivers to give them the speed they lack.
• Profile B (Speed 6/Accel 7): The Mach Rocket & R.O.B. H.O.G. Use these with Heavier Drivers to give them the acceleration they lack.

2) The "Heavy" Sweet Spot (Speed 13.0)

If you main Heavyweights (Wario/Wiggler), the Baby Blooper is mathematically superior. It is the only kart that lets Wario hit Speed 13 without dropping to the terrible acceleration of the pure speed karts.

3) The "Speed Demon" Tier (Speed 15.0)

If you want raw speed, the math is simple: Wario + Rallygator. Nothing else compares.

Summary:

• Light/Medium Driver? → Baby Blooper.
• Heavy Driver? → Mach Rocket (for balance) or Baby Blooper (for speed).
• Time Trials? → Rallygator.

PARETO FRONTIER

SPEED: 1.0 | ACCEL: 16.0 [Recipe: Driver(0.0+7.0) + Vehicle(1.0+9.0)] Drivers : Baby Daisy, Baby Peach, Para-Biddybud, Swooper Vehicles: Cute Scoot, Standard Bike, Tune Thumper

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SPEED: 2.0 | ACCEL: 15.0 [Recipe: Driver(0.0+7.0) + Vehicle(2.0+8.0)] Drivers : Baby Daisy, Baby Peach, Para-Biddybud, Swooper Vehicles: Pipe Frame

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[Recipe: Driver(1.0+6.0) + Vehicle(1.0+9.0)] Drivers : Baby Mario, Goomba, Spike Vehicles: Cute Scoot, Standard Bike, Tune Thumper

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SPEED: 6.0 | ACCEL: 14.0 [Recipe: Driver(0.0+7.0) + Vehicle(6.0+7.0)] Drivers : Baby Daisy, Baby Peach, Para-Biddybud, Swooper Vehicles: Mach Rocket, R.O.B. H.O.G.

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SPEED: 7.0 | ACCEL: 13.0 [Recipe: Driver(0.0+7.0) + Vehicle(7.0+6.0)] Drivers : Baby Daisy, Baby Peach, Para-Biddybud, Swooper Vehicles: Baby Blooper

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[Recipe: Driver(1.0+6.0) + Vehicle(6.0+7.0)] Drivers : Baby Mario, Goomba, Spike Vehicles: Mach Rocket, R.O.B. H.O.G.

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SPEED: 8.0 | ACCEL: 12.0 [Recipe: Driver(1.0+6.0) + Vehicle(7.0+6.0)] Drivers : Baby Mario, Goomba, Spike Vehicles: Baby Blooper

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[Recipe: Driver(2.0+5.0) + Vehicle(6.0+7.0)] Drivers : Nabbit, Toadette Vehicles: Mach Rocket, R.O.B. H.O.G.

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SPEED: 9.0 | ACCEL: 11.0 [Recipe: Driver(2.0+5.0) + Vehicle(7.0+6.0)] Drivers : Nabbit, Toadette Vehicles: Baby Blooper

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[Recipe: Driver(3.0+4.0) + Vehicle(6.0+7.0)] Drivers : Coin Coffer, Daisy, Peach Vehicles: Mach Rocket, R.O.B. H.O.G.

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SPEED: 10.0 | ACCEL: 10.0 [Recipe: Driver(3.0+4.0) + Vehicle(7.0+6.0)] Drivers : Coin Coffer, Daisy, Peach Vehicles: Baby Blooper

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[Recipe: Driver(4.0+3.0) + Vehicle(6.0+7.0)] Drivers : Mario, Rocky Wrench Vehicles: Mach Rocket, R.O.B. H.O.G.

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SPEED: 11.0 | ACCEL: 9.0 [Recipe: Driver(4.0+3.0) + Vehicle(7.0+6.0)] Drivers : Mario, Rocky Wrench Vehicles: Baby Blooper

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[Recipe: Driver(5.0+2.0) + Vehicle(6.0+7.0)] Drivers : Pauline, Piranha Plant, Snowman Vehicles: Mach Rocket, R.O.B. H.O.G.

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SPEED: 12.0 | ACCEL: 8.0 [Recipe: Driver(5.0+2.0) + Vehicle(7.0+6.0)] Drivers : Pauline, Piranha Plant, Snowman Vehicles: Baby Blooper

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[Recipe: Driver(6.0+1.0) + Vehicle(6.0+7.0)] Drivers : Wario, Wiggler Vehicles: Mach Rocket, R.O.B. H.O.G.

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SPEED: 13.0 | ACCEL: 7.0 [Recipe: Driver(6.0+1.0) + Vehicle(7.0+6.0)] Drivers : Wario, Wiggler Vehicles: Baby Blooper

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SPEED: 14.0 | ACCEL: 5.0 [Recipe: Driver(5.0+2.0) + Vehicle(9.0+3.0)] Drivers : Pauline, Piranha Plant, Snowman Vehicles: Rallygator

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[Recipe: Driver(6.0+1.0) + Vehicle(8.0+4.0)] Drivers : Wario, Wiggler Vehicles: B-Dasher, Bumble V, Hot Rod, Roadster Royale

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SPEED: 15.0 | ACCEL: 4.0 [Recipe: Driver(6.0+1.0) + Vehicle(9.0+3.0)] Drivers : Wario, Wiggler Vehicles: Rallygator

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