Base model vehicles and performance specs are as described on page 29-30 of the Star Frontiers/Alpha Dawn "Expanded Game Rules" book. The only exception is a hovercycle top speed should read 180kph, not 120kph. Variations are as follows:
Table A: Size Variations (Cars & Cycles)
applicable to both ground and hover vehicles
| Top Speed | Cruise Speed | Accel | Decel | Turn Speed | Passengers | Cargo | Cost |
| Small/Compact | -20 | -20 | -20 | +20 | +10 | -50%* | -50% | -25% |
| Intermediate | -10 | - n/a - | -10 | +10 | - n/a - | - n/a - | -25% | -10% |
| Mid-Sized | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - |
| Large | +10 | +10 | +10 | - n/a - | -10 | +50%** | +50% | +15% |
| Heavy | - n/a - | +20 | - n/a - | -10 | -20 | +100% | +100% | +30% |
*round up
** round down
Table B: Style Variations (Cars & Cycles)applicable to both ground and hover vehicles
| | Top Speed | Cruise Speed | Accel | Decel | Turn Speed | SPECIAL | Cost |
| Standard | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - |
| Cruise | -10kph | +10% | - n/a - | - n/a - | - n/a - | - n/a - | +10% |
| Utility* | -10kph | - n/a - | - n/a - | - n/a - | -10 | - n/a - | +20% |
| Luxury | - n/a - | +20kph | - n/a - | - n/a - | -10 | - n/a - | +25% |
| Sport | +10kph | -10 kph | +10 | +10 | +10 | - n/a - | +40% |
| Super Sport | +20kph | -20kph | +20 | +20 | +20 | - n/a - | +50% |
| Dual Sport | - n/a - | - n/a - | +10 | -10 | -10 | +0.1 Terrain | +30% |
| Adventure | - n/a - | - n/a - | - n/a - | -20 | -20 | +0.2 terrain | +40% |
| Vintage/Classic | -10kph | -10kph | -10 | - n/a - | -10 | - n/a - | -50 to +500% |
| Custom** | varies | varies | varies | varies | varies | varies | varies |
* Utility vehicles may alternate passenger and cargo space by any combination of 50%/50% (e.g. a standard utility ground car may convert 75kg/0.5cubic meter of cargo space to 3 passenger seats, can't exceed the 50% on either end)
**CUSTOM variations allow for combinations, such as sport/standard. Use the lesser applicable modifier and average the cost modifiers. Use common sense where applicable, such as a longer wheelbase vehicle (chopper or stretch limo) would have a turn speed penalty etc
Table C: Size Variations (Transports & Explorers)
applicable to ground & hover transports and explorers
| | Top Speed | Cruise Speed | Accel | Decel | Turn Speed | Passengers | Cargo | Cost |
| Small | +10kph | -10kph | +10 | +10 | +10 | -33% | -50% | -20% |
| Standard | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - | - n/a - |
| Large | -10kph | +10kph | -10 | -10 | -10 | +33% | +50% | +50% |
| Heavy Duty* | -20kph | +20kph | -20 | -20 | -20 | +100% | +100% | +100% |
*TRACK MOBILE chassis available @ +25% cost, not permitted in city streets
Table D: Style Variations (Transports & Explorers)
applicable to ground & hover transports and explorers
| | Top Speed | Cruise Speed | Accel | Decel | Turn Speed | Passengers | Cargo | Cost |
| Sport | +20kph | -10kph | +10 | +10 | +10 | - n/a - | -25% | +25% |
| Utility* | - n/a - | - n/a - | +10 | - n/a - | - n/a - | - n/a - | - n/a - | +30% |
| Passenger | - n/a - | - n/a - | - n/a - | +10 | - n/a - | +20 | -75% | +20% |
| Cargo | - n/a - | +10 | - n/a - | - n/a - | - n/a - | -50% | +100% | +10% |
a standard style is also available, no additonal cost or variables
* Utility vehicles may alternate passenger and cargo space by any combination of 50%/50% (e.g. a standard utility explorer may convert 3 passenger seats to 1000kg/3 cubic meter of cargo space)
Appendix 1: Modifications
Sidecar (cycles only): +1 passenger/+50% cargo, -10 accel/decel/turn speeds --- Cost: 500Cr
Detachable Luggage (cycle or car): +50% cargo space --- Cost: 75Cr
Utility Trailer: +100% cargo space, -10 accel/decel/turn/top speeds for each trailer added --- Cost: 250(cycle)/750(car)/2500Cr(transport)Cr
Air Brakes/Hard Brakes (hover/ground): +10 decel; --- Cost: 1000Cr
Re-geared Transaxles(any): +10 accel/decel & -10 Top/Cruise OR -10 accel/decel & +10 Top/Cruise --- Cost: 50Cr
GyroStabilizers: +10 turn speed --- Cost: 2500Cr
+1 Powerplant Rebuild: +10 to Top/Cruise/Accel/Decel/Turn speeds --- Cost: 15000Cr*
+2 Powerplant Rebuild: +20 to Top/Cruise/Accel/Decel/Turn speeds --- Cost: 25000Cr*
+3 Powerplant Rebuild: +30 to Top/Cruise/Accel/Decel/Turn speeds --- Cost: 35000Cr*
High Performance Racing Chip (HPRC, any): +20 top speed & accel, +10 decel & turn speeds --- Cost: 20000Cr
*Powerplant rebuilds may not exceed the +3 category. A +1 rebuild can be performed initially, followed later by another +1 or a +2 rebuild but can never exceed the +3 bonuses.
(source- Alpha Dawn Expanded)
