Audi A4
2015–2023The last A4 developed around the combustion line-up first
- Base price
- 44,600 €
- 0–100 km/h
- 7.1 s
- Power
- 204 PS
- Consumption, combined
- 6.4 l/100 km
Audi A4 B9 vs B10: What Actually Changed in Eight Years B9 vs B10
Two generations, eight model years apart. The B9 closed out the combustion-first era of the A4; the B10 opened the PPC platform chapter. We put both on the same set of figures and looked at what the newer car actually gives you.
Audi A5
2024–First A4 on PPC, with mild-hybrid across the entire range
- Power
- 204 PS
- Consumption, combined
- 6.6 l/100 km
Evolution in 30 seconds
The eight changes that matter, before the detail
Platform
The B9 closed out the MLB evo cars; the B10 is the first A4 on PPC. Everything below follows from that — the axles move, the body grows, the boot gives way to the electrified hardware.
MLB evo → PPCLength
4,762 mm becomes 4,829 mm. The wheelbase accounts for most of it at +63 mm, so the growth is between the axles rather than in the overhangs.
+67 mmHeight
1,388 mm becomes 1,444 mm, with the tracks widening 52 mm at the front and 56 mm at the rear. The B10 sits taller and stands wider, not just longer.
+56 mmKerb weight
1,560 kg becomes 1,695 kg. That is the single largest change on this page, and it is what the figures below are paying for.
+135 kgBoot space
480 l becomes 445 l. The one number that moves the wrong way for anyone who loads the car rather than drives it.
−35 lConsumption, combined
6.4 l/100 km becomes 6.6. The newer car is the thirstier one in our catalogue's figures — the extra 135 kg is not free, and the platform change does not pay it back here.
+0.2 l/100 kmTop speed
210 km/h becomes 248 km/h, with torque up 14 Nm to 340 Nm. The B10 is the faster car at the top of the range even though it is slower off the line.
+38 km/h0–60 mph
4.4 s becomes 4.8 s. Against the weight gain, the extra torque does not hold the acceleration — a rare case of a newer generation losing a headline figure outright.
+0.4 s
Side by side, to scale
Both outlines are drawn at the same scale from the catalogue's measurements.
Audi A44,762 mmAudi A54,829 mm
- Length
- 4,762 mm4,829 mm+67 mm
- Width
- 1,847 mm1,860 mm+13 mm
- Height
- 1,388 mm1,444 mm+56 mm
- Wheelbase
- 2,829 mm2,892 mm+63 mm
Before and after
Drag the handle to reveal the newer generation. Photographs come from our catalogue.
Drag the handle, or use the arrow keys after selecting it.
Generation timeline
Where the two compared generations sit in the model's history
- 11 generation 1994–1996
- 11 generation, restyling 1996–1999
- 22 generation 2000–2006
- 33 generation 2004–2009
- 44 generation 2007–2012
- 44 generation, restyling 2011–2015
- 55 generation 2015–2019
- B95 generation, restyling 2019–2024
- B10A5 3 generation 2024–present
Full changelog
Everything that arrived, improved, changed or disappeared
- NewPPC platformFirst A4 on the Premium Platform Combustion architecture.
- New48 V mild hybrid as standardEvery engine now ships with the MHEV plus system.
- New11.9″ digital instrument panelReplaces the B9's 10.1″ virtual cockpit.
- NewRear-axle steering optionOffered on the 45 TFSI quattro for the first time.
- ImprovedEntry engine outputPeak power is unchanged at 204 PS; torque rises 14 Nm to 340 Nm.
- ChangedWLTP consumptionCombined consumption goes from 6.4 to 6.6 l/100 km in our catalogue's figures — up, not down, against 135 kg of extra kerb weight.
- ImprovedCabin noiseLaminated side glass now standard from the second trim up.
- ImprovedCharging bayWireless pad moves forward and gains active cooling.
- ChangedGearbox mappingS tronic recalibrated for the MHEV coasting function.
- ChangedBoot volume480 l becomes 445 l, a loss of 35 litres.
- ChangedTrim namingSport and S line reshuffled into a single equipment ladder.
- ChangedWheel sizes17″ entry wheel replaced by an 18″ as standard.
- RemovedManual gearboxNo manual is offered anywhere in the B10 range.
- RemovedV6 dieselThe 50 TDI leaves the line-up without a direct replacement.
- RemovedPhysical climate dialsClimate control moves into the lower touchscreen.
- RemovedSpare wheel optionRepair kit only, in every market.
The B10 is the larger car in every external dimension: 67 mm longer, 63 mm more wheelbase, 56 mm taller, and 52 mm wider across the front track. It is also 135 kg heavier, and that weight is what the rest of the figures are paying for.
It buys a higher top speed and 14 Nm more torque. It costs 0.2 l/100 km at the pump, 0.4 s to 60 mph, and 35 litres of boot. Peak power is unchanged at 204 PS. Whether that trade is worth making depends on which of those numbers you meet daily — which is what the verdict below is about.
- Both cars carry 204 PS — the engine is not where the generations differ
- The B10 gains 63 mm of wheelbase, all of it between the axles rather than in the overhangs
- Boot space falls from 480 to 445 litres
- Combined consumption rises from 6.4 to 6.6 l/100 km
| Figure | B9 | B10 | Change |
|---|---|---|---|
| Kerb weight | 1,560 kg | 1,695 kg | +135 kg |
| Top speed | 210 km/h | 248 km/h | +38 km/h |
| Wheelbase | 2,829 mm | 2,892 mm | +63 mm |
| Boot space | 480 l | 445 l | −35 l |
| Consumption, combined | 6.4 l/100 km | 6.6 l/100 km | +0.2 l/100 km |
The newer car is the thirstier one and the slower one off the line. That is what the catalogue says, and it is what we publish.
Full spec sheet with deltas
Identical rows are dimmed; the delta column shows the direction of travel
Units
| Full spec sheet with deltas | Audi A45 generation, restyling · 40 TFSI S-tronic · 204 PS · FWD · Robotic | Audi A53 generation · 2.0 TFSI S tronic · 204 PS · FWD · Automatic | Δ |
|---|---|---|---|
| Price | |||
| Base price | 44,600 € | — | |
| Main | |||
| Transmission | Robotic | Automatic | |
| Top speed | 210 km/h | 248 km/h (best) | +38 km/h |
| 0–100 km/h | 7.1 s | — | |
| 0–60 mph | 4.4 s (best) | 4.8 s | +0.4 s |
| Kerb weight | 1,560 kg (best) | 1,695 kg | +135 kg |
| Gross weight | 2,060 kg | — | |
| Power and torque | |||
| Power at rpm | 4475 – 6000 | 4300 | |
| Torque | 326 Nm | 340 Nm (best) | +14 Nm |
| Torque at rpm | 1450 – 4275 | 2000 | |
| Fuel, consumption and emissions | |||
| Mild hybrid | MHEV12V | — | |
| Consumption, urban | 8.9 l/100 km | — | |
| Consumption, extra-urban | 5.4 l/100 km | — | |
| Consumption, combined | 6.4 l/100 km (best) | 6.6 l/100 km | +0.2 l/100 km |
| Emission standard | Euro 6 | — | |
| Fuel tank | 54 l | 56 l | +2 l |
| Engine | |||
| Compression ratio | 11.7 | 12.5 | |
| Bore × stroke, mm | 82.5 × 92.8 | 82.5 x 92.8 | |
| Dimensions and capacity | |||
| Length | 4,762 mm | 4,829 mm | +67 mm |
| Width | 1,847 mm | 1,860 mm | +13 mm |
| Height | 1,388 mm | 1,444 mm | +56 mm |
| Wheelbase | 2,829 mm | 2,892 mm (best) | +63 mm |
| Front track | 1,572 mm | 1,624 mm | +52 mm |
| Rear track | 1,555 mm | 1,611 mm | +56 mm |
| Boot space | 480 l (best) | 445 l | −35 l |
| Boot space, seats folded | — | 1,299 l | |
| Wheels, suspension and brakes | |||
| Tyre size | 205/60 R16 | — | |
Verdict
Scored on the figures above, not on brand loyalty
Still the pragmatic pick. Physical controls, a manual option on the used market, and a price that has already taken its depreciation hit.
Quieter, more efficient and better equipped, but you pay for it up front and give up 15 litres of boot and every physical climate control.
Upgrade if
- You drive enough kilometres a year that 0.6 l/100 km actually shows up on the fuel card.
- You want the current assistance package — the B9's hardware cannot be retrofitted.
- Cabin noise matters to you; the laminated glass is a genuine, measurable difference.
Skip if
- You load the boot to the roof regularly — the B9 gives you 15 litres more and a flatter floor.
- You want physical climate dials, which the B10 does not offer at any trim level.
- You are buying used and the €4,600 list-price gap has not yet closed on the second-hand market.
Frequently asked questions
Is the B10 A4 faster than the B9?
Not on the figures we hold. The B10 pulls 14 Nm more torque and runs to 248 km/h against the B9's 210, but it is 135 kg heavier and takes 4.8 s to 60 mph where the B9 takes 4.4. It is the faster car at the top end and the slower one off the line.
Did the A4 lose its manual gearbox with the B10?
Yes. The B9 offered a six-speed manual on lower-output petrols; the B10 is S tronic only across the entire range, in every market.
Why is the newer A4 heavier?
The 48 V mild-hybrid hardware, the larger body and additional sound insulation add roughly 75 kg over a comparable B9.
Is the B9 still worth buying used?
For high-mileage buyers who want physical controls and a lower entry price, yes. The B9 has already absorbed its steepest depreciation, and its running costs are close to the B10's outside of fuel.
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