Isuzu Ippon

Which Isuzu Ippon version to buy: 2.5 D MT vs 3.1 D MT vs 3.1 D AT

If you are choosing an Isuzu Ippon, the catalogue only lists 1 generation (from 1988-01-01 to 2004-01-31), one body type — Pickup double-cab — and 5 listed versions that collapse to three mechanically distinct choices: 2.5 D MT at 76 hp, 3.1 D MT at 109 hp, and 3.1 D AT at 109 hp. All three run Diesel, 4 Inline cylinders, Combined injection (direct-distributed), and AWD.

If you are choosing an Isuzu Ippon, the catalogue only lists 1 generation (from 1988-01-01 to 2004-01-31), one body type — Pickup double-cab — and 5 listed versions that collapse to three mechanically distinct choices: 2.5 D MT at 76 hp, 3.1 D MT at 109 hp, and 3.1 D AT at 109 hp. All three run Diesel, 4 Inline cylinders, Combined injection (direct-distributed), and AWD. There is no second generation to “wait for,” no restyling row in the data, and no petrol alternative. The buying question is therefore not which era, but which engine size and which gearbox.

Overview: the only generation you can actually pick from

The Isuzu Ippon in this catalogue is a single-generation Pickup double-cab built from 1988-01-01 to 2004-01-31. pokoleniy is 1. Across that span the listing counts 5 modifications, but two names repeat: 2.5 D MT appears twice at the same 76 hp / 2500 displacement, and 3.1 D MT appears twice at the same 109 hp / 3100 displacement. For a buyer that means five catalogue rows, three unique drivetrains.

What does not change between those rows: AWD, Diesel fuel, 4 Inline cylinders, Combined injection (direct-distributed), independent spring front suspension, independent leaf-spring rear suspension, front Disc brakes, rear Drum brakes. Boost is not measured on every version. Engine location is not measured. Valves per cylinder is not measured.

What does change, and is therefore the whole shopping list:

• displacement 2500 vs 3100
• power 76 hp vs 109 hp
• gearbox Manual 5 vs Automatic 4

Kilowatt figures in the source are 55 kW on 2.5 D MT, 3.1 D MT, and 3.1 D AT alike. Horsepower is not the same on the 2.5 and the 3.1. Treat hp as the ranking number for power; treat kW as the value recorded in the file, not as a second ranking.

Generations: one generation, five listed versions, no restyle split

1 generation (1988-01-01 – 2004-01-31)

1 generation is the entire Isuzu Ippon story in these data: Pickup double-cab, 5 modifications, production from 1988-01-01 to 2004-01-31. Every listed version shares those start and stop dates. There is no later generation with more gears, a different body, or a different drive layout to trade up into. Restyling is not recorded as a separate generation, so you should not read “another generation” into the duplicate 2.5 D MT and 3.1 D MT rows — they are the same names, same 76 / 109 hp, same 2500 / 3100 displacements, same AWD.

Buyer implication of a one-generation catalogue: you cannot use “newer generation” as a proxy for reliability, economy, or size. Those fields are not measured here anyway. You choose among 2.5 D MT, 3.1 D MT, and 3.1 D AT inside one body and one production window.

Engines and specs: the three unique rows (and the two repeats)

Power per litre below is arithmetic on the given displacement and hp (displacement ÷ 1000 for litres). Boost, torque, and rpm are not measured on all versions.

2.5 D MT vs 3.1 D MT (same Manual 5, same AWD):

• Extra displacement: 3100 − 2500 = 600.
• Extra horsepower: 109 − 76 = 33 hp, which is 33 / 76 ≈ 43% more power on the larger engine.
• Specific output: 76 / 2.5 = 30.4 hp per litre on 2.5 D MT; 109 / 3.1 ≈ 35.2 hp per litre on 3.1 D MT. The 3.1 is not only bigger; it also makes about 4.8 hp more per litre.
• Fuel, cylinders, layout, injection, drive, gears: identical labels.

3.1 D MT vs 3.1 D AT (same 109 hp, same 3100, same Diesel 4 Inline AWD):

• Gearbox is the only ranked difference: Manual 5 versus Automatic 4.
• The automatic has 1 fewer gear (5 − 4 = 1).
• Power, displacement, fuel, cylinders, layout, injection, brakes, and suspension labels match.

2.5 D MT vs 3.1 D AT:

• You change both engine size and gearbox: 2500 Manual 5 at 76 hp versus 3100 Automatic 4 at 109 hp.
• That is the largest step in the catalogue: +600 displacement, +33 hp, −1 gear, Manual → Automatic.

Nm is not measured on every version, so you cannot rank “torque for a pickup” from this file. Do not infer a torque winner.

Performance and economy: 0-100, top speed, mpg

For 2.5 D MT, 3.1 D MT, and 3.1 D AT (and for both repeated listings):

• 0–100: not measured
• maximum speed: not measured
• city consumption: not measured
• highway consumption: not measured
• combined consumption: not measured
• CO2: not measured
• eco class: not measured

You cannot pick a version on sprint, top speed, or mpg from these data. Any claim that the 2.5 D MT “saves fuel” or that the 3.1 D AT “is slower” would be outside the file. The only performance-adjacent numbers that exist are 76 hp vs 109 hp and 5 gears vs 4 gears.

If you still want a power-based ranking with what is measured: 3.1 D MT and 3.1 D AT share 109 hp; 2.5 D MT is 33 hp behind. Without 0–100 or mass, that ranking is power on paper, not a timed result.

Dimensions and weight: kerb, gross, clearance, tank, wheels

On every listed Isuzu Ippon version in 1 generation:

• kerb weight: not measured
• gross weight: not measured
• ground clearance: not measured
• fuel tank: not measured
• wheels: not measured

Weight per horsepower cannot be calculated: there is no kerb mass to divide by 76 or 109. Payload cannot be calculated: there is no gross mass. You cannot choose “the lighter double-cab” or “the one with more clearance.” Chassis labels that are measured are the same on all five rows: front Independent, spring; rear Independent, leaf spring; front Disc; rear Drum. Chassis is not a differentiator.

Which version to choose

There is one generation, one body (Pickup double-cab), one drive (AWD), one fuel (Diesel). The decision tree has two forks.

Fork 1 — engine: 2.5 D MT or the 3.1 pair

Choose 2.5 D MT if the smaller displacement is the point: 2500 vs 3100, 76 hp vs 109 hp. You give up 33 hp and about 4.8 hp/L of specific output. You keep Manual 5, AWD, 4 Inline, Combined injection (direct-distributed). You do not get a measured economy bonus in this catalogue — consumption is not measured — so the 2.5 is the lower-power, smaller-displacement Manual, not a proven mpg winner.

Choose 3.1 D MT or 3.1 D AT if 109 hp is the point. That is 43% more horsepower than 2.5 D MT from 24% more displacement (600 / 2500 = 0.24). Specific output also rises (30.4 → 35.2 hp/L), so the extra capacity is not “empty litres.” Torque is still not measured; do not buy the 3.1 on a torque number that is not in the file.

The two catalogue rows named 2.5 D MT are not two power levels: both are 76 hp. The two rows named 3.1 D MT are not two power levels: both are 109 hp. Unlike a model that lists two “3.3 AT” figures at different hp, you do not disambiguate 2.5 D MT or 3.1 D MT by horsepower — they do not split.

Fork 2 — gearbox on the 3.1: 3.1 D MT or 3.1 D AT

If you already want 3100 and 109 hp, the remaining choice is Manual 5 (3.1 D MT) versus Automatic 4 (3.1 D AT).

• Same power: 109 hp and 55 kW on both.
• Same engine size: 3100.
• Same Diesel, 4, Inline, injection, AWD, brakes, suspension.
• Different gear count: 5 vs 4.

3.1 D MT is the 3.1 with more gears and a Manual. 3.1 D AT is the only Automatic in the whole Isuzu Ippon list. If you will not shift a Manual, 3.1 D AT is the only remaining row — there is no 2.5 automatic in these data. If you will shift, 3.1 D MT keeps 109 hp and adds the fifth gear; 2.5 D MT is the Manual that drops you to 76 hp.

What “extra money” cannot be shown here

Prices are not in the data and are not used. What the larger engine “buys” in numbers that exist is +33 hp and +600 displacement and +4.8 hp/L. What the automatic “buys” in numbers that exist is Automatic with 4 gears instead of Manual with 5, at the same 109 hp. What neither buys, because the fields are not measured: faster 0–100, higher top speed, lower mpg, lower kerb weight, more tank range, larger wheels, more clearance.

A short buyer map

• Want the only Automatic: 3.1 D AT (109 hp, 3100, 4 gears, AWD).
• Want 109 hp and Manual 5: 3.1 D MT.
• Want the smallest listed diesel Manual: 2.5 D MT (76 hp, 2500, 5 gears, AWD).
• Want a later generation, a different body, 2WD, petrol, or a measured mpg figure: that configuration is not in this catalogue.

1 generation does not change the ranking between these versions: all five listings share 1988-01-01–2004-01-31. You are not choosing a newer Ippon generation. You are choosing 76 vs 109 hp and Manual 5 vs Automatic 4 on one Pickup double-cab AWD diesel.