B Class · 601–700 PI

Best B Class Cars by Speed in Forza Horizon 5

B (601–700 PI) is one of the most competitive tiers in FH5 online racing. These five cars post the highest Speed ratings in class.

Updated February 2025 Ranked by Speed · 164 cars analyzed
8.4
Best Speed
B
Class
5/5 RWD
Drivetrain
30K CR
Cheapest
164
Cars in Group
#1
Rank
1939 Auto Union Type D B675

1939 Auto Union Type D

LEGENDARY VINTAGE RACERS RWD
15,000,000 CR
1939 Auto Union Type D

The undisputed Speed champion in this group. A natural advantage that's hard to overcome, even with a perfect tune on a weaker platform.

Speed
8.4
Handling
3.6
Accel
4.5
Launch
3.4
Braking
2.7
Offroad
4.7
Power 485 HP
Torque 413 lb-ft
Weight 2,823 lbs
Displacement 2.99L
Front % 42%
Drivetrain RWD
View full 1939 Auto Union Type D details →
#2
Rank
1939 Mercedes-Benz W154 B672

1939 Mercedes-Benz W154

LEGENDARY VINTAGE RACERS RWD
20,000,000 CR
1939 Mercedes-Benz W154

A strong Speed contender that's remarkably close to the top. Balanced and versatile across multiple track types.

Speed
7.9
Handling
3.3
Accel
4.1
Launch
3.3
Braking
2.8
Offroad
4.6
Power 483 HP
Torque 361 lb-ft
Weight 2,700 lbs
Displacement 2.96L
Front % 50%
Drivetrain RWD
View full 1939 Mercedes-Benz W154 details →
#5
Rank
2003 Bmw M5 B694

2003 Bmw M5

COMMON RETRO SALOONS RWD
30,000 CR
2003 Bmw M5

The most accessible car on this list with Speed that holds its own against pricier competition. Ideal for budget builds.

Speed
7.1
Handling
5.0
Accel
5.0
Launch
5.2
Braking
3.8
Offroad
5.5
Power 394 HP
Torque 368 lb-ft
Weight 3,990 lbs
Displacement 4.94L
Front % 53%
Drivetrain RWD
View full 2003 Bmw M5 details →
Our Methodology

How We Ranked These Cars

The rankings above are based on stock performance data — every car shown is completely untuned, straight from the Autoshow. If a car ranks #1 for Speed in stock form, it has a natural advantage that's hard to overcome.

At ForzaLabs, we built an automated system that collects every upgrade and tuning option for every car in Forza Horizon 5 — thousands of parts across hundreds of vehicles.

Beyond Stock

Stock Rankings Are Only the Starting Line

In competitive online racing, nobody runs stock. The right combination of upgrades can transform a mid-tier car into a class leader. The question isn't "which car is best stock" — it's "which car is best after the optimal tune for my race?"

That's exactly what our full database answers. Enter your race restrictions — class limit, drivetrain rules, weather conditions — and we'll show you the optimal car and build.

ForzaLabs Pro

Find the Best Tuned Car for Any Race

Stop guessing which car to bring. Search our complete upgrade database to find the highest-performing build for any class, any restriction, any event.

  • Every upgrade path mapped for 800+ cars
  • Filter by class, drivetrain, and race type
  • Tuned stats — not just stock baselines
  • Updated with every game patch
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Explore More B Cars

Browse all 164 B cars, filter by any stat or price — or check out our other rankings.

Why Speed Matters

In Forza Horizon 5, the Speed stat reflects raw top-end velocity. Tracks with long straights reward cars that pull away at the top end.

All five cars on this list are RWD. This layout dominates the Speed rankings thanks to its mechanical advantages.

Budget vs. Premium Picks

If you're just starting out, the 2003 Bmw M5 at 30,000 CR is a strong entry point. The 1939 Auto Union Type D leads at 8.4 Speed, but costs 15,000,000 CR.